JP2023542772A - Wireless communication method and terminal - Google Patents

Abstract

Embodiments of the present application provide a wireless communication method and a terminal, and the first terminal transmits a first instruction for instructing a first resource set to a second terminal through cooperation between the terminals. the first resource set includes the time-frequency resources selected by the first terminal or the time-frequency resources indicated by the sidelink control information; and the first terminal includes the second resource set. receiving a second instruction for instructing, the second resource set including resources that meet or do not meet the first condition in the first resource set; triggering reselection of resources according to the set of resources, thereby improving reliability of the communication system. [Selection diagram] Figure 7

Description

Embodiments of the present application relate to the field of communication, and more specifically, to a wireless communication method and terminal.

The communication architecture from terminal to terminal (Device to Device, D2D), vehicle to vehicle (Vehicle to Vehicle, V2V), vehicle to other equipment (Vehicle to Everything, V2X), etc. is based on side link (SL) technology. This is different from the method used in conventional cellular systems in which communication data is received or transmitted at a base station. Such a direct communication scheme between terminals has higher spectral efficiency and lower transmission delay. How to select resources and improve communication reliability for terminals in such a direct communication system is a technical issue that should be solved as soon as possible in this application.

Embodiments of the present application provide a wireless communication method and terminal that improve the reliability of a communication system through cooperation between terminals.

A first aspect is a step in which the first terminal transmits a first instruction for instructing a second terminal to a first resource set, the first resource set being selected by the first terminal. the first terminal receiving a second instruction to indicate a second set of resources; the second resource set includes resources that meet or do not meet the first condition in the first resource set; and the first terminal triggers reselection of resources according to the second resource set; A wireless communication method is provided.

In a second aspect, the second terminal receives a first instruction transmitted by the first terminal to indicate a first resource set, the first resource set being a first resource set. a time-frequency resource selected by the terminal or a time-frequency resource indicated by the first terminal by the sidelink control information; and the second terminal transmits to the first terminal a second instruction for instructing the second resource set. provide.

A third aspect is a step in which the first terminal transmits a first instruction for instructing a second terminal to a first resource set, the first resource set being selected by the first terminal. The present invention provides a wireless communication method including the step of including a time-frequency resource designated by a first terminal or a time-frequency resource indicated by sidelink control information.

A fourth aspect is a step in which the second terminal receives a first instruction transmitted by the first terminal to indicate a first resource set, the first resource set being a first resource set. If the step includes a time-frequency resource selected by the terminal or a time-frequency resource indicated by the first terminal by the sidelink control information, and if a resource that satisfies the first condition exists in the first resource set, the second terminal transmitting a second instruction for instructing the first terminal to a second resource set, the second resource set being a resource that satisfies or does not satisfy the first condition in the first resource set; A wireless communication method is provided.

In a fifth aspect, the second terminal receives a first instruction transmitted by the first terminal to indicate a first resource set, the first resource set being a first resource set. a step of including a time-frequency resource selected by the terminal or a time-frequency resource indicated by the first terminal by side link control information; and a step in which the priority of the data to be transmitted by the second terminal is the priority of the data to be transmitted by the first terminal. the second terminal transmits a second instruction to the first terminal for indicating a second resource set, the second resource set being higher than the first resource set; and a step of including a resource that satisfies or does not satisfy a first condition.

A sixth aspect provides a terminal including a processor and a memory. The memory is used to store a computer program, and the processor calls and operates the computer program stored in the memory, and in any one of the first to fifth aspects or each implementation means thereof. Do the method.

A seventh aspect provides an apparatus for implementing the method of any one of the first to fifth aspects or their respective implementation means.

Specifically, the device executes the method of any one of the first to fifth aspects or each implementation means thereof on a device to which the device is attached by calling and operating a computer program from the memory. Equipped with a processor for

An eighth aspect provides a computer-readable storage medium for storing a computer program that causes a computer to execute the method in any one of the first to fifth aspects or each implementation means thereof.

A ninth aspect provides a computer program product comprising computer program instructions for causing a computer to perform the method in any of the first to fifth aspects or their respective implementation means.

A tenth aspect provides a computer program that, when operated on a computer, causes the computer to execute the method of any one of the first to fifth aspects or each implementation means thereof.

By the technical solution of the first aspect or the second aspect above, the first terminal can know overlapping resources where there is a half-duplex problem or interference, and thereby resource re-resource of such resources. Trigger selection and further improve the reliability of communication systems.

By the technical solution of the third aspect, fourth aspect or fifth aspect, the signaling overhead between the first terminal and the second terminal is reduced while ensuring the reliability of the communication system. be able to.

FIG. 2 is a schematic diagram of a first mode according to the present application; FIG. 3 is a schematic diagram of a second mode according to the present application. 1 is a schematic diagram of an NR V2X physical layer structure according to the present application; FIG. FIG. 2 is a schematic diagram of resource reservation according to the present application. FIG. 1 is a schematic diagram of resource distribution according to the present application. FIG. 2 is a schematic diagram 2 of resource distribution according to the present application. FIG. 3 is a schematic diagram 3 of resource distribution according to the present application. FIG. 4 is a schematic diagram of resource distribution according to the present application. 3 is an interaction flowchart of a wireless communication method according to an embodiment of the present application. FIG. 5 is a schematic diagram 5 of resource distribution according to the present application. FIG. 6 is a schematic diagram 6 of resource distribution according to the present application. 5 is an interaction flowchart of a wireless communication method according to another embodiment of the present application. 5 is an interaction flowchart of a wireless communication method according to another embodiment of the present application. FIG. 2 is a schematic block diagram showing a terminal 1200 according to an embodiment of the present application. FIG. 2 is a schematic block diagram showing a terminal 1300 according to an embodiment of the present application. FIG. 2 is a schematic block diagram showing a terminal 1400 according to an embodiment of the present application. FIG. 2 is a schematic block diagram showing a terminal 1500 according to an embodiment of the present application. FIG. 2 is a schematic block diagram showing a terminal 1600 according to an embodiment of the present application. 17 is a schematic structural diagram showing a communication device 1700 according to an embodiment of the present application. FIG. 1 is a schematic structural diagram of a device according to an embodiment of the present application; FIG. 19 is a schematic block diagram illustrating a communication system 1900 according to an embodiment of the present application. FIG.

Hereinafter, the technical solutions in the embodiments of the present application will be explained together with the drawings in the embodiments of the present application, but obviously the described embodiments are not all the embodiments, but some of the embodiments of the present application. It is. All other embodiments obtained by a person skilled in the art based on the embodiments of this application without creative work shall fall within the protection scope of this application.

The vehicle Internet system adopts a method of direct terminal-to-terminal communication, and the 3rd Generation Partnership Project (3GPP (registered trademark)) supports two transmission modes: the first mode and the second mode. defined.

First mode: As shown in FIG. 1A, the transmission resources of the terminal are allocated by the network device, the terminal performs data transmission on the side link based on the resources allocated by the network device, and the network device The resources transmitted twice may be allocated, or the resources transmitted semi-statically to the terminal may be allocated.

Second mode: As shown in FIG. 1B, the terminal selects one resource from the resource pool by itself to transmit data. Specifically, the terminal may select a transmission resource from the resource pool by listening, or may select a transmission resource from the resource pool in a random manner.

The technical solution of the present application is applied to the first mode, and the related knowledge related to the technical solution of the present application will be introduced below.

1. New Radio (NR) V2X physical layer structure NR V2X has a physical side link control channel (PSCCH) and a physical side link shared channel (Physical Side link Shared Channel). Regarding PSSCH), PSCCH is used to transmit the first sidelink control information, the first sidelink control information will be interpreted and explained below, and the PSSCH is used to transmit the data and the second sidelink control information. , the second sidelink control information mainly includes data demodulation related domains to facilitate other terminals to demodulate data in the PSSCH.

The relationship between PSCCH and PSSCH is that PSCCH and PSSCH are consecutive in the same time slot and do not overlap with each other, and PSCCH and PSSCH are consecutive in the frequency domain and do not overlap with each other. This requires that the PSCCH and the PSSCH be transmitted simultaneously. FIG. 2 is a schematic diagram of NR V2X physical layer structure according to the present application, as shown in FIG. .

2. Resource reservation in NR-V2X In NR-V2X, in the second mode described above, the terminal selects resource transmission data by itself. Resource reservation is a prerequisite for resource selection. Resource reservation is for a terminal to reserve resources for subsequent use according to sidelink control information on the PSCCH. NR-V2X supports both intra-TB resource reservation and inter-TB resource reservation, and as shown in Figure 3, the terminal transmits the first sidelink control information and determines its time domain resource allocation. N time-frequency resources (including the resources currently used for the terminal's transmission) of the current TB are shown in the domain Assignment and Frequency resource assignment. Here, N≦Nmax, and in NR V2X, Nmax is 2 or 3. At the same time, the N time-frequency resources indicated above should be distributed within W time slots. In NR V2X, W is 32. For example, as shown in FIG. 3, in TB1, the terminal transmits initial transmission data on PSSCH, and at the same time transmits first sidelink control information on PSCCH, and transmits initial transmission, retransmission 1, and retransmission 2 in the above two domains. (that is, N=3 at this time), the time-frequency resource for the initial transmission is the resource currently used for transmission by the terminal, and the time-frequency resource for retransmission 1 and retransmission 2 is TB1. It is a resource reserved within. In addition, the initial transmission, retransmission 1, and retransmission 2 are distributed within 32 time slots in the time domain.

Selectably, the terminal performs resource reservation between TBs using a resource reservation period when transmitting the first sidelink control information. For example, as shown in FIG. 3, when the terminal transmits the first sidelink control information for the initial transmission of TB1, it sends TB1 initial transmission, retransmission 1, and retransmission in the "Time resource assignment" and "Frequency resource assignment" domains. 2, and is expressed as {(t ₁ , f ₁ ), (t ₂ , f ₂ ), (t ₃ , f ₃ )}. t ₁ , t ₂ , and t ₃ represent time domain positions of TB1 initial transmission, retransmission 1 and retransmission 2 resources, and f ₁ , f ₂ , and f ₃ represent corresponding frequency domain positions. If the value of the "Resource reservation period" domain of the first sidelink control information is 100 milliseconds, then the first sidelink control information is a time-frequency resource {(t ₁ +100, f ₁ ), (t ₂ +100, f ₂ ), (t ₃ +100, f ₃ )}, and these three resources are used for the transmission of TB 2 initial transmission, retransmission 1, and retransmission 2. In NR V2X, the possible values for the "Resource reservation period" domain are 0, 1-99, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000 milliseconds, which is faster than LTE V2X. Be flexible. However, in each resource pool, only the values of type e are arranged, and the terminal determines the values that may be used according to the resource pool to be used. The values taken by the type e in the resource pool configuration constitute a resource reservation period set M, and as an example, e is 16 or less.

Note that the reservation between TBs can be activated or deactivated in units of resource pools depending on the network configuration or pre-configuration. When deactivating the reservation between TBs, the first sidelink control information does not include the "Resource reservation period" domain. Generally, before triggering resource reselection, the resource reservation period, which is the value taken by the "Resource reservation period" domain used by the terminal, does not change, and each time the terminal transmits the first sidelink control information, Then, the "Resource reservation period" domain is used to reserve resources for the next period, and is used for transmission of other TBs, realizing periodic and semi-persistent transmission.

Any terminal operates in the second mode, and the terminal obtains the first sidelink control information transmitted by the other terminal by listening to the PSCCH transmitted by the other terminal, and the terminal obtains the first sidelink control information transmitted by the other terminal, and to know the resources reserved by other terminals. When the terminal performs resource selection, it will exclude resources reserved by other terminals, thereby avoiding resource conflicts.

3. In the second mode, the terminal needs to select resources by itself. The resource listening window, resource selection window, and resource selection method in NR-V2X will be introduced below.

The resource selection window is defined as follows. As shown in FIG. 4, the terminal needs to perform resource selection or reselection at time slot n, and the resource selection window starts from n+T1 and ends until n+T2. If 0≦T1≦T _proc,1 and the subcarrier spacing is 15, 30, 60, 120 kHz, T _proc,1 is 3, 5, 9, 17 time slots. T2 _min ≦T2≦remaining delay budget of the work, the value set taken by T2 _min is {1, 5, 10, 20}*2 ^μ time slots, μ = 0, 1, 2, 3 Corresponding to cases where the subcarrier spacing is 15, 30, 60, or 120 kHz, the terminal determines T2 _min from the set of values taken according to the priority of the data to be transmitted. For example, if the subcarrier spacing is 15 kHz, the terminal determines T2 _min from the set {1, 5, 10, 20} according to the priority of its own data to be transmitted. If T2 _min is greater than or equal to the business's remaining delay budget, then T2 is equal to the business's remaining delay budget. The remaining delay budget is the difference between the data delay request and the current point in time. For example, for a data packet that arrived at timeslot n, assuming that the delay request is 50ms and one timeslot is 1ms, and the current time is timeslot n, the remaining delay budget is 50ms. If the current time is time slot n+20, the remaining delay budget is 30 milliseconds.

The resource listening window is defined as follows. The terminal listens to resources on n-T0 to nT _proc,0 , and T0 takes a value of 100 or 1100 milliseconds. If the subcarrier spacing is 15, 30, 60, 120 kHz, T _proc,0 is 1, 1, 2, 4 time slots. In fact, the terminal listens to the first sidelink control information sent by other terminals in each time slot, and after time slot n triggers resource selection or reselection, the terminal Use the resource listening result of _proc,0 .

The resource selection process includes the following steps.

In step 1, the terminal designates all available resources belonging to the resource pool used by the terminal in the resource selection window as a resource set A, and denotes any resource in the set A as R(x,y); x and y indicate the frequency domain position and time domain position of the resource, respectively. Let us denote the initial number of resources in set A as M _total .

（切り上げを示す）であり、そうでないと、Ｑ＝１である。ＴｓｃａｌはＴ２に対応するミリ秒単位の数である。例えば、端末がタイムスロットｍでリスニングせず、順次に用いられるリソースプール構成におけるリソース予約周期セットＭから１つのＰｒｘを選択してリソース排除を行い、そのうちのあるＰｒｘに対して、Ｐｒｘ＜Ｔｓｃａｌ且つｎ－ｍ＜＝Ｐｒｘｌｇであり、Ｑ値を２として計算すると仮定し、タイムスロットｍ＋ｑ＊Ｐｒｘｌｇは図４Ａにおけるタイムスロットｍにマッピングする続いた２つの横線でマークされるタイムスロットであり、そうでないと、Ｑ＝１であり、タイムスロットｍ＋ｑ＊Ｐｒｘｌｇは図４Ａのドット状でマークされるタイムスロットである。選択可能に、端末に用いられるリソースプールはＴＢ間の予約を非アクティブ化する場合、端末は上記ステップ１－１を実行しなくてもよい。 In step 1-1, the terminal transmits data in time slot m within the resource listening window, but if it does not listen, the terminal determines whether time slot m+q*Prxlg and resource R(x, y+j*Ptxlg) overlap. If there is an overlap, resource R(x, y) is removed from resource set A, that is, resources that may be reserved by a terminal transmitting data in time slot m are placed in resource R(x, y+j*Ptxlg). overlap, indicating that a resource conflict problem exists. j = 0, 1, 2, 3...C-1, C is determined by a random value counter generated by the terminal, and when the terminal performs resource selection, it is determined by randomly generating the counter value (one positive integer). , determine how many cycles to reserve for the resource to be selected. Ptxlg is the number of Ptx converted into logical time slots, Ptx is the resource reservation period determined by the terminal that performs resource selection, and is the value taken from the resource reservation period set M in the resource pool configuration used by the terminal. It is also a value specified in the "Resource reservation period" domain in the first side link control information when the terminal performing resource selection transmits data after completing resource selection. Therefore, resource R(x, y+j*Ptxlg) is a series of resources marked in FIG. 4A with some hatched small rectangles. For time slot m+q*Prxlg, q=1, 2, 3...Q. Prxlg is the number of Prx converted into logical time slots. Prx is the resource reservation period indicated by "Resource reservation period" in the first sidelink control information transmitted on the PSCCH listened to by the terminal. Since the terminal does not listen in time slot m, Prx here is all possible values of the resource reservation period set M in the resource pool configuration used for the terminal, i.e., depending on each value the terminal takes in M. It is determined whether the calculated time slot m+q*Prxlg overlaps with the resource R(x, y+j*Ptxlg). For Q, if Prx<Tscal and nm<=Prxlg,

(indicating rounding up), otherwise Q=1. Tscal is the number of milliseconds corresponding to T2. For example, a terminal does not listen in time slot m, selects one Prx from a resource reservation period set M in a resource pool configuration that is used sequentially, and performs resource exclusion, and for a certain Prx among them, Prx<Tscal and Assuming that nm <= Prxlg and calculating the Q value as 2, timeslot m+q*Prxlg is the timeslot marked by two consecutive horizontal lines that map to timeslot m in FIG. 4A, otherwise , Q=1, and time slot m+q*Prxlg is the time slot marked with a dot shape in FIG. 4A. Optionally, if the resource pool used by the terminal deactivates inter-TB reservations, the terminal may not perform step 1-1 above.

（切り上げを示す）であり、そうでないと、Ｑ＝１である。ＴｓｃａｌはＴ２に対応するミリ秒単位の数である。ＰｒｘｌｇはＰｒｘが論理タイムスロットに変換された数であり、Ｐｒｘは端末がリスニングしたＰＳＣＣＨに伝送される第１のサイドリンク制御情報における「Ｒｅｓｏｕｒｃｅ ｒｅｓｅｒｖａｔｉｏｎ ｐｅｒｉｏｄ」で指示されるリソース予約周期である。端末は、タイムスロットｍで受信された第１のサイドリンク制御情報とこれらの仮定で受信したＱ個の第１のサイドリンク制御情報の「Ｔｉｍｅ ｒｅｓｏｕｒｃｅ ａｓｓｉｇｎｍｅｎｔ」と「Ｆｒｅｑｕｅｎｃｙ ｒｅｓｏｕｒｃｅ ａｓｓｉｇｎｍｅｎｔ」ドメインで指示されるリソースがリソースＲ（ｘ，ｙ＋ｊ＊Ｐｔｘｌｇ）と重なるかどうか、即ちリスニングされたリソースがリソースＲ（ｘ，ｙ＋ｊ＊Ｐｔｘｌｇ）にリソース衝突が存在するかどうかを判断し、重なると、セットＡから対応するリソースＲ（ｘ、ｙ）を排除する。上記ｊ＝０，１，２，３…Ｃ－１であり、Ｃは端末が生成したランダムにｃｏｕｎｔｅｒ値によって決定される。ＰｔｘｌｇはＰｔｘが論理タイムスロットに変換された数であり、Ｐｔｘはリソース選択を行う端末が決定したリソース予約周期である。例えば、リソースＲ（ｘ，ｙ＋ｊ＊Ｐｔｘｌｇ）は図４Ｂに一部の斜線付きの小矩形でマークされる一連のリソースである。端末がタイムスロットｍリソースＥ（ｖ、ｍ）でＰＳＣＣＨにおける第１のサイドリンク制御情報をリスニングし、Ｐｒｘ＞Ｔｓｃａｌをデコードすると、Ｑが１であるのを算出し、端末はタイムスロットｍ＋Ｐｒｘｌｇで同じ内容の第１のサイドリンク制御情報を受信したと仮定する。端末は、タイムスロットｍで受信した第１のサイドリンク制御情報とタイムスロットｍ＋Ｐｒｘｌｇで仮定で受信した第１のサイドリンク制御情報の「Ｔｉｍｅ ｒｅｓｏｕｒｃｅ ａｓｓｉｇｎｍｅｎｔ」と「Ｆｒｅｑｕｅｎｃｙ ｒｅｓｏｕｒｃｅ ａｓｓｉｇｎｍｅｎｔ」ドメインで指示されるリソース１、２、３、４、５、６がリソースＲ（ｘ，ｙ＋ｊ＊Ｐｔｘｌｇ）と重なるかどうかを判断し、リソース１はリソースＥ（ｖ、ｍ）であり、重なると、リソースセットＡからリソースＲ（ｘ、ｙ）を排除する。端末が測定したＳＬ－ＲＳＲＰはＳＬ－ＲＳＲＰ閾値より大きく、且つ端末に用いられるリソースプールはＴＢ間のリソース予約を非アクティブ化すると、端末がタイムスロットｍで受信した第１のサイドリンク制御情報の「Ｔｉｍｅ ｒｅｓｏｕｒｃｅ ａｓｓｉｇｎｍｅｎｔ」と「Ｆｒｅｑｕｅｎｃｙ ｒｅｓｏｕｒｃｅ ａｓｓｉｇｎｍｅｎｔ」ドメインで指示されるリソースがリソースＲ（ｘ，ｙ＋ｊ＊Ｐｔｘｌｇ）と重なるかどうかのみを判断し、重なると、リソースセットＡからリソースＲ（ｘ、ｙ）を排除する。 In step 1-2, the terminal transmits first sidelink control information (v is the frequency domain position of the resource) transmitted on the PSCCH to the resource E (v, m) within the time slot m within the listening window. Listening, PSCCH side link reference signal receiving power (Sidelink Reference Signal Received Power, SL -RSRP) or relevant PSCCH PSSCH SL -RSRP (that applies PSRP) PSSCH SL -RSRP) to be sent at the same time as CCH If the measured SL-RSRP is greater than the SL-RSRP threshold and the resource pool used for the terminal activates the resource reservation between TBs, the terminal receives the first Assume that sidelink control information is received. q=1,2,3...Q, and for Q, Prx<Tscal and nm<=Prxlg,

(indicating rounding up), otherwise Q=1. Tscal is the number of milliseconds corresponding to T2. Prxlg is the number of Prx converted into logical time slots, and Prx is the resource reservation period indicated by "Resource reservation period" in the first sidelink control information transmitted to the PSCCH listened to by the terminal. The terminal is instructed in the "Time resource assignment" and "Frequency resource assignment" domains of the first sidelink control information received in time slot m and the Q pieces of first sidelink control information received under these assumptions. If the resource overlaps resource R(x, y+j*Ptxlg), i.e., the listened resource determines whether there is a resource conflict with resource R(x, y+j*Ptxlg), and if it overlaps, the resource from set A Eliminate the corresponding resource R(x,y). The above j=0, 1, 2, 3...C-1, where C is randomly determined by a counter value generated by the terminal. Ptxlg is the number of Ptx converted into logical time slots, and Ptx is the resource reservation period determined by the terminal that performs resource selection. For example, resource R(x,y+j*Ptxlg) is a series of resources marked with some hatched small rectangles in FIG. 4B. When the terminal listens to the first sidelink control information on the PSCCH in time slot m resource E(v, m) and decodes Prx>Tscal, it calculates that Q is 1 and the terminal listens to the same in time slot m+Prxlg. Assume that a first sidelink control information of the content is received. The terminal uses the resources indicated by the "Time resource assignment" and "Frequency resource assignment" domains of the first sidelink control information received in time slot m and the first sidelink control information hypothetically received in time slot m+Prxlg. 1, 2, 3, 4, 5, 6 overlap with resource R (x, y + j * Ptxlg), resource 1 is resource E (v, m), and if they overlap, the resource from resource set A is Eliminate R(x,y). If the SL-RSRP measured by the terminal is greater than the SL-RSRP threshold, and the resource pool used by the terminal deactivates the inter-TB resource reservation, the terminal receives the first sidelink control information in time slot m. It is only determined whether the resources specified in the "Time resource assignment" and "Frequency resource assignment" domains overlap with the resource R (x, y + j * Ptxlg), and if they overlap, the resource R (x, y) is transferred from the resource set A. eliminate.

If the remaining resources of resource set A are less than M _total *X% after the resource removal, the SL-RSRP threshold is increased by 3 dB and step 1 is re-executed. The terminal uses resource set A after resource exclusion as a candidate resource set.

In step 2, the terminal randomly selects resource transmission data from the candidate resource set.

The points that need to be explained are as follows.

1. The above RSRP threshold is determined by the priority P1 carried on the PSCCH that the terminal listens to and the priority P2 of the data to be transmitted by the terminal. The configuration of a resource pool used in a terminal includes one SL-RSRP threshold table, and the SL-RSRP threshold table includes SL-RSRP thresholds corresponding to all priority combinations. The configuration of the resource pool may be configured by the network or may be preconfigured.

For example, as shown in Table 1, if the option values for the priority levels of P1 and P2 are both 0-7, the SL-RSRP threshold corresponding to the different priority combinations is indicated by γ _ij , and the value of γ _ij is i is the value taken by priority level P1, and j is the value taken by priority level P2.

When the terminal listens to the PSCCH transmitted by another terminal, it acquires the priority P1 and the priority P2 of the data to be transmitted, which are included in the first side link control information transmitted on the PSCCH, and the terminal uses Table 1. The SL-RSRP threshold is determined so as to check the SL-RSRP threshold value.

2. The terminal uses the measured SL-RSRP of the PSCCH or the SL-RSRP of the PSSCH scheduled by the PSCCH and compares it with the SL-RSRP threshold depending on the resources of the resource pool used by the terminal. Determined by pool configuration. The configuration of the resource pool may be configured by the network or may be preconfigured.

3. The above Prxlg/Ptxlg is the number by which Prx/Ptx is converted into a logical time slot. If one time slot is 1 millisecond and Prx is 5 milliseconds, then these 5 time slots Among them, two time slots may be downlink time slots in TDD mode or transmission synchronization signal time slots, and since these time slots are not included in the SL resource pool, they are represented by Prx. It is necessary to convert 5 milliseconds into three time slots of logical time slots, ie Prxlg.

4. Regarding the above X%, the possible values of X are {20, 35, 50}. The configuration of the resource pool used by the terminal includes the correspondence between the priority and the possible values, and the terminal determines the value of X according to the priority of the data to be transmitted and the correspondence. The resource pool configuration may be configured by the network or may be preconfigured.

4. Resource reselection based on resource re-evaluation In NR-V2X, after the terminal completes resource selection, re-evaluation (Re - evaluation) is also supported. As shown in FIG. 5, resources x, y, z, u, v are time-frequency resources selected by the terminal in time slot n, and resource y is located in time slot m. For resources z and u that are indicated for the first time just before the terminal sends the first sidelink control information on resource y (resource y is previously indicated by the first sidelink control information on resource x), FIG. The dashed arrow in the middle indicates an instruction immediately before transmitting the first sidelink control information, and the solid arrow indicates an instruction to transmit the first sidelink control information. In order to prevent resource collisions, the terminal performs step 1 above at least once in time slot m-T3, i.e. determines a resource selection window and a resource listening window as above in at least time slot m-T3; The above step 1 is executed to exclude resources from the resources in the resource selection window and obtain a candidate resource set. If resource z or u is not in the candidate resource set, the terminal performs step 2 above to reselect a time-frequency resource from the candidate resource set, and depending on the implementation of the terminal, the terminal Any resource not indicated by sending the first sidelink control information may be reselected; for example, if u and v are in the candidate resource combination, any number of Select a resource. The above T3 is T _proc,1 .

V. Resource reselection based on resource preemption NR-V2X supports a resource preemption mechanism. In NR-V2X, the consequences of resource preemption mechanisms are explained entirely in terms of preempted terminals. After completing the resource selection, the terminal still continues to listen to the first sidelink control information, and the time-frequency resources selected and indicated by transmitting the first sidelink control information are the following three: When the condition is met, the time-frequency resource is preempted by another terminal, and the terminal triggers resource reselection for the time-frequency resource.
1. The resources reserved for the listened first sidelink control information overlap with the resources selected and indicated by the terminal, including full overlap and partial overlap.
2. The SL-RSRP of the PSCCH corresponding to the first sidelink control information listened to by the terminal or the SL-RSR of the PSSCH scheduled by the PSCCH is greater than the SL RSRP threshold.
3. The priority listed in the first sidelink control information that was listened to is higher than the priority of the data to be transmitted by the terminal.

Selectably, priority in this application corresponds to a numerical value, e.g. priority 1, 1 indicates a numerical value corresponding to the priority, a lower numerical value indicates a higher priority, or a numerical value indicates a higher priority. The smaller the value, the lower the priority, and this application does not limit this.

As shown in FIG. 6, resources w, x, y, z, v are time-frequency resources selected by the terminal in time slot n, and resource x is in time slot m. The terminal is indicated by sending the first sidelink control information on resource x, and for resources x and y indicated in the first sidelink control information previously transmitted by the terminal, the terminal Execute step 1 above at least once in time slot m-T3, that is, determine the resource selection window and resource listening window as above in at least time slot m-T3, and execute step 1 above to determine the resource selection window within the resource selection window. Perform resource exclusion on the resources of , and determine a candidate resource set. If resource x or y is not in the candidate resource set (satisfying conditions 1 and 2 above), an instruction to load the first sidelink control information with a high priority causes resource x or y to be placed in the candidate resource set (satisfying condition 3 above). ), if so, the terminal performs step 2, ie reselects a resource from the candidate resource set. Note that after triggering resource reselection, depending on the implementation of the terminal, the terminal may reselect any resource selected but indicated by sending the first sidelink control information, e.g. Any number of resources z and v. The above T3 is Tproc,1.

The above SL-RSRP is a linear average value of received power on all resource elements (Resource Elements, REs) carrying reference signals in the PSCCH or PSSCH, and the reference signals are demodulation reference signals (DMRS) or It may be a channel state information-reference signal (CSI-RS). When the PSSCH or PSCCH is transmitted using multiple antenna ports, the SL-RSRP is the sum of the SL-RSRP measured by each antenna port.

As described above, the first sidelink control information is carried on the PSCCH, mainly includes domains related to resource listening, and is convenient for other terminals to perform resource exclusion and resource selection after decoding. In addition to data, second side link control information is carried on the PSSCH. Therefore, hereinafter, the sidelink control information in the PSCCH referred to in this application is the above-mentioned first sidelink control information, and the sidelink control information in the PSSCH is the above-mentioned second sidelink control information, which will be repeated hereafter. I don't explain it.

It should be understood that a terminal in embodiments of the present application may be a user equipment (UE), an access terminal, a user unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, May refer to a terminal, wireless communication device, user agent or user equipment. Terminals include stations in WLAN (STAION, ST), cellular telephones, cordless telephones, Session Initiation Protocol (SIP) telephones, wireless local loop (WLL) stations, and personal digital assistants. istant, (PDA) devices, handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices and next generation communication systems, such as terminals in NR networks or future evolved devices. It may be a terminal in a public land mobile network (PLMN), or the like.

By way of example and not limitation, in embodiments of the present application, the terminal may be a wearable device. Wearable devices, also called wearable smart devices, are a general term for the intelligent design of everyday wear using wearable technology and wearable devices developed, such as glasses, gloves, watches, clothing, shoes, etc. Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothing or accessories. Wearable devices achieve powerful functionality not only through hardware devices but also through software support, data interaction, and cloud interaction. Wearable smart devices are broadly defined as full-featured, large-scale devices, such as smart watches and smart glasses that achieve full or partial functionality without relying on smartphones, and that only focus on specific types of application functionality. Including various smart bracelets and smart jewelry that monitor physical signs that need to be used in conjunction with other devices such as smartphones.

The network device may be an equipment for communicating with a mobile device, and the network device may be an access point (AP) in WLAN, a base transceiver station (BTS) in GSM or CDMA, or a WCDMA (registered trademark). ), an evolved base station (Evolutionary Node B, eNB or eNodeB) in LTE, a relay station or access point, or a network in an in-vehicle device, wearable device, or NR network. It may be a device or a base station (gNB) or a network device in a future evolved PLMN network, etc.

It should be understood that the embodiments of the present application can be applied not only to communication frameworks such as D2D, V2V, V2X, etc., but also to any other terminal-to-terminal communication framework, and the present application does not limit this. Embodiments of the present application apply to unlicensed spectrum, which can also be referred to as license-free spectrum.

As described above, how to select resources to improve the reliability of the communication system in the second mode is a technical problem that this application seeks to solve as soon as possible. Therefore, the inventive concept of the present application selects resources through cooperation between terminals.

Hereinafter, the technical solution of the present application will be explained in detail.

FIG. 7 is an interaction flowchart of a wireless communication method according to an embodiment of the present application, and as shown in FIG. 7, the method includes the following steps.

In step S710, the first terminal transmits a first instruction to the second terminal to indicate a first resource set, and the first resource set is the time-frequency resource selected by the first terminal or the first resource set. 1 includes time-frequency resources indicated by one terminal by sidelink control information.

In step S720, the second terminal determines a second resource set that includes resources that meet or do not meet the first condition in the first resource set.

In step S730, the second terminal transmits a second instruction to indicate the second resource set to the first terminal.

In step S740, the first terminal triggers resource reselection according to the second resource set.

Selectably, the first instruction includes a first frequency domain instruction and a first time domain instruction. The first frequency domain indication is used to indicate the frequency domain position of each resource in the first resource set, and the first time domain indication is used to indicate the time domain position of each resource in the first resource set. used for.

Optionally, the first frequency domain indication is an absolute indication or a relative indication to a preset frequency domain position. The first time domain indication is an absolute indication or a relative indication with respect to a preset time domain position.

Selectably, the preconfigured time domain location, the preconfigured frequency domain location can be configured or predefined on the first terminal by a network device.

Selectably, the preset time domain location is a time domain location that the first terminal occupies when transmitting the first instruction, and the preset frequency domain location is a time domain location that the first terminal occupies when transmitting the first instruction. or the preset time domain position is a time domain start position when the first terminal transmits the first instruction; The set frequency domain position is the frequency domain start position when the first terminal transmits the first instruction. In short, the present application does not limit the preset time domain position.

It should be understood that for one resource, the frequency domain position and time domain position of the resource indicated by the first frequency domain instruction and the first time domain instruction, respectively, may both be relative values or absolute values. or one may be a relative value and the other an absolute value, and this application does not limit this.

Selectably, the transmission time of the first instruction is:
(1) a first time after the first terminal completes resource selection;
(2) either one of the time when the first terminal completes resource selection and the first transmission time of the first terminal;
(3) the sum of the time when the first terminal completes resource selection and the offset amount of the preset time;
(4) the time at which the first terminal transmits the PSSCH; and (5) any time between the time at which the first terminal completes resource selection and the first time, where: , the first time is the difference between the first transmission time of the first terminal and the first time period.

Optionally, the time in this application is also referred to as a time unit, the unit of time may be a time slot, of course the unit of time may be a millisecond, etc., and the present application does not limit this. For example, the first time is the first time slot after the first terminal completes resource selection.

Selectably, the preset time offset amount is preconfigured or semi-statically configured or dynamically configured to the terminal equipment by the network device or determined by the first terminal, but this application does not limit this. do not.

Selectably, the first time period includes a time during which the first terminal performs resource selection or reselection, e.g., when the first terminal performs resource reselection in timeslot 3, the first time period is a time period consisting of time slots 1-3, ie, the first time period includes time slot 3. Also, for example, the first terminal triggers resource reselection at timeslot 1 and completes the resource reselection at timeslot 3, that is, the time at which the terminal performs resource reselection is 1-3, and the first terminal The band includes time slots 1-3.

Optionally, the unit of the first time period may be a time slot or a millisecond, but the present application does not limit this.

Selectably, when calculating the first time, it is first necessary to unify the first transmission time of the first terminal and the time unit of the first time period, for example, both can be expressed as timeslots or milliseconds. Unify.

It should be understood that in this application, a time between any two times may include at least one of the two times, and may not include the two times; Do not limit this.

Selectably, the first indication includes side link control information on the PSCCH transmitted by the first terminal, side link control information on the PSSCH transmitted by the first terminal, PC5-Radio Resource Control Signaling (RRC) ), a media access control control unit (Media Access Control Control Element, MAC CE).

It is necessary to explain that the "sidelink control information" in the time-frequency resources indicated by the first terminal using the sidelink control information refers to the sidelink control information in the PSCCH transmitted by the first terminal.

Selectably, the first condition is
(1) A condition in which the resources in the first resource set cause the transmission resources of the first terminal to overlap with the transmission resources of the second terminal, and (2) the resources in the first resource set The transmission resource of the terminal includes at least one of the conditions in which the resource overlaps with the third resource set.

Selectably, the third resource set is a resource set determined according to the resources indicated by the side link control information listened to by the second terminal and the resource reservation period, for example, the third resource set is determined according to the resources indicated by the side link control information and the resource reservation period. The time domain position of the resource in the third resource set is obtained from the sum of the time domain position of the resource and the resource reservation period, and based on this, the third resource set acquires the side link control information listened to by the second terminal. , and resources determined according to the resource reservation period and the resources designated by the side link control information.

Optionally, the third resource set is a resource set determined according to resources indicated in sidelink control information listened to by the second terminal. In such a case, the third resource set includes the resources indicated by the sidelink control information.

Optionally, the transmission resources of the first terminal are resources of the first resource set. Alternatively, the transmission resource of the first terminal is determined according to at least one of the resources of the first resource set, the resource reservation period of the first terminal, and the first random value, and the first random value is , is used to determine the number of periods in which the first terminal reserves the time-frequency resource selected by the first terminal or the time-frequency resource indicated by the sidelink control information.

Optionally, the second terminal's transmission resources are resources in a fourth resource set. Alternatively, the transmission resource of the second terminal is determined according to at least one of the resources in the fourth resource set, the resource reservation period of the second terminal, and the second random value, and the second random value is used to determine the number of periods in which the second terminal reserves the time-frequency resources selected by the second terminal or the time-frequency resources indicated by the sidelink control information. The fourth resource set includes time-frequency resources selected by the second terminal or time-frequency resources indicated by the second terminal by the sidelink control information.

Selectably, if the resource reservation period of the first terminal does not exist, there is a resource in the first resource set in which the transmission resource of the first terminal overlaps the transmission resource of the second terminal, and the resource reservation period of the first terminal does not exist. This indicates that there is a resource in one resource set that overlaps with a transmission resource of a second terminal. If there is a resource reservation period for the first terminal, it is possible to determine the corresponding reservation resources for the resources in the first resource set. There are resources where the transmission resources of the terminal overlap with the transmission resources of the second terminal, there are resources where the resources in the first resource set overlap with the transmission resources of the second terminal, and/or there are resources where the transmission resources of the first terminal overlap with the transmission resources of the second terminal. This indicates that there is a resource in which the reserved resource corresponding to the resource in the set overlaps with the transmission resource of the second terminal.

Selectably, if the resource reservation period of the first terminal does not exist, there is a resource in the first resource set that causes the transmission resource of the first terminal to overlap with a third resource set, and the first terminal This indicates that there are resources in the resource set that overlap with the third resource set. If there is a resource reservation period for the first terminal, it is possible to determine the corresponding reserved resources for the resources in the first resource set. There are resources where the transmission resources of the terminal overlap with a third resource set, and there are resources where the resources in the first resource set overlap with the third resource set, and/or the resources correspond to the resources in the first resource set. This indicates that there are resources whose reserved resources overlap with the third resource set.

It should be understood that the resource reservation cycle of the first terminal is also described as the resource reservation cycle used for the first terminal, and is the resource reservation cycle in the side link control information in the PSCCH transmitted by the first terminal. Yes, that is, the value specified in the "Resource Reservation Period" domain.

It is important to understand that the resource reservation cycle of the second terminal is also described as the resource reservation cycle used for the second terminal, and is the resource reservation cycle in the side link control information in the PSCCH transmitted by the second terminal. Yes, that is, the value specified in the "Resource Reservation Period" domain.

Optionally, in the present application, the overlapping resources may be both time-domain and frequency-domain overlapping resources, or time-domain overlapping resources.

Selectably, (1) of the first condition is mainly for the case where the second terminal is a receiving end of the first terminal, and a certain resource in the first resource set satisfies the first condition. If (1) is satisfied, a half-duplex problem may exist, i.e., the first terminal and the second terminal both transmit data on overlapping resources in (1), and the second If the terminal cannot receive the data transmitted by the first terminal when the terminal transmits data, the data transmitted by the first terminal cannot be decoded.

Selectably, when a certain resource in the first resource set satisfies (2) of the first condition above, the transmission resource of the first terminal is interfered with or collides with the transmission resource of another terminal. In other words, the second terminal needs to transmit data using the resource that the other terminal overlaps in (2), and the first terminal also needs to transmit data using this resource. Listen to.

Selectably, the first condition is
(3) a condition in which the resource reservation period of the first terminal is the same as or a multiple of the resource reservation period of the second terminal;
(4) a condition in which the priority of the data to be transmitted by the second terminal is higher than the priority of the data to be transmitted by the first terminal;
(5) the condition that the SL-RSRP of the PSCCH on which the sidelink control information listened to by the second terminal is located is equal to or higher than the RSRP threshold;
(6) A condition in which the SL-RSRP of the PSSCH scheduled by the PSCCH is greater than or equal to the RSRP threshold;
(7) a condition in which the resource reservation cycle in the sidelink control information listened to by the second terminal is the same as or a multiple of the resource reservation cycle of the first terminal; and
(8) The priority in the side link control information listened to by the second terminal further includes at least one condition that is higher than the priority of the data to be transmitted by the first terminal.

It should be understood that the RSRP thresholds in (5) and (6) may be the same or different, but this application does not limit this.

Optionally, the second set of resources is used to trigger the first terminal to perform resource reselection.

Selectably, the second instruction includes a second frequency domain instruction and a second time domain instruction. The second frequency domain indication is used to indicate the frequency domain position of each resource in the second resource set, and the second time domain indication is used to indicate the time domain position of each resource in the second resource set. used to.

Optionally, the second frequency domain indication is an absolute indication or a relative indication to a preset frequency domain position. The second time domain indication is an absolute indication or a relative indication with respect to a preset time domain position.

Selectably, the preset time domain location, the preset frequency domain location may be configured or predefined on the second terminal by the network device.

Selectably, the preset time domain location is a time domain location that the second terminal occupies when transmitting the second instruction, and the preset frequency domain location is a time domain location that the second terminal occupies when transmitting the second instruction. or the preset time domain position is a time domain start position when the second terminal transmits the second instruction; The set frequency domain position is the frequency domain start position when the second terminal transmits the second instruction. In short, the present application does not limit the preset time domain position.

It should be understood that for one resource, the frequency domain position and time domain position of the resource indicated by the second frequency domain instruction and the second time domain instruction, respectively, may both be relative values or absolute values. or one may be a relative value and the other an absolute value, and this application does not limit this.

Optionally, the second indication includes an index in the first resource set of each resource in the second resource set. For example, a first resource set includes resource 1, resource 2, and resource 3, where 1-3 each indicate the index of the resource, a second instruction includes 1 and 3, and the resources in the second resource set are resources 1 and resource 3.

Selectably, the transmission time of the second instruction is
(1) Any time before a second time that is the time corresponding to the resource with the smallest time domain position in the first resource set;
(2) any time before a third time that is the difference between the second time and the first time period;
(3) any time before a fourth time that satisfies the first condition in the first resource set and corresponds to the resource with the smallest time domain position;
(4) any time before a fifth time that is the difference between the fourth time and the first time period;
(5) any time earlier than or equal to the sixth time that is the transmission time for determining the second instruction indicated by the first terminal; and (6) the sixth time and the second time. The seventh time is either earlier than or the same as the seventh time, which is the difference from the first time zone.

Selectably, the first terminal may direct sending the second instruction at the sixth time or before the sixth time. .

As a point that needs to be explained, the transmission time of the second instruction can be explained as follows, but without limiting this, the transmission time of the second instruction is:
(1) a time earlier than a second time, which is the time corresponding to the resource with the smallest time domain position in the first resource set;
(2) a time earlier than a third time that is the difference between the second time and the first time zone;
(3) a time that satisfies the first condition in the first resource set and is earlier than a fourth time that corresponds to the resource with the smallest time domain position;
(4) a time earlier than the fifth time, which is the difference between the fourth time and the first time zone;
(5) a time that is earlier than or equal to the sixth time that is the transmission time for determining the second instruction indicated by the first terminal; and (6) the sixth time and the first time. It is either earlier than or equal to the seventh time, which is the difference from the band.

Optionally, the sixth time is an absolute time. Alternatively, the sixth time is a time offset amount with respect to the transmission time or reception time of the first information.

As a point that needs to be explained, regarding the interpretation and explanation of the transmission time of the second instruction, reference can be made to the interpretation and explanation of the transmission time of the first instruction, and this application will not repeat this explanation. .

Selectably, the second instruction is carried on either side link control information on the PSCCH transmitted by the second terminal, side link control information on the PSSCH transmitted by the second terminal, PC5-RRC signaling, or MAC CE. It will be done.

Selectably, the first terminal may transmit first information to the second terminal, the first information comprising: a resource reservation period of the first terminal; a first random value; and a sixth time.

It should be understood that reference may be made to the above for various interpretations and explanations of the first information, and this application does not repeat the same.

Optionally, the transmission time of the first information and the transmission time of the first instruction are the same or different, and this application does not limit this.

Selectably, the first information loading method and the first instruction loading method are the same or different, and the present application does not limit this. For example, both the first instruction and the first information are included in the sidelink control information on the PSCCH transmitted by the first terminal, or the first instruction is included in the sidelink control information on the PSCCH transmitted by the first terminal. information and the first information is carried on PC5-RRC signaling.

Selectably, the second resource set includes resources that satisfy the first condition in the first resource set, then the first terminal can trigger resource reselection for these resources. . Or reselecting the selected resources simultaneously when reevaluating the selected resources or determining whether to trigger resource reselection in the process of the selected resources being preempted by other terminals.

Selectably, the second resource set includes resources that do not satisfy the first condition in the first resource set, then the first terminal first selects the first resource based on the second resource set. Having determined the resources in the set that satisfy the first condition, the first terminal may further trigger resource reselection for the resources that satisfy the first condition. Alternatively, when re-evaluating the selected resource or determining whether to trigger resource reselection in the process of the selected resource being preempted by another terminal, the resource satisfying the first condition may be simultaneously re-evaluated. select.

Selectably, the first terminal performs the resource reselection at a time when the first terminal performs the resource reselection.
(1) a first time after the time of receipt of the second instruction;
(2) Any time between the reception time of the second instruction and a fourth time that satisfies the first condition in the first resource set and corresponds to the resource with the smallest time domain position. time,
(3) any time between the time of receipt of the second instruction and a fifth time that is the difference between the fourth time and the first time period;
(4) fifth time;
(5) Any time between the reception time of the second instruction and the first transmission time of the first terminal;
(6) Any time between the reception time of the second instruction and the first time that is the difference between the first transmission time of the first terminal and the first time period, and (7) the first including any of the following times.

As a point that needs to be explained, regarding the interpretation and explanation of the time when the first terminal performs resource reselection, reference can be made to the interpretation and explanation of the transmission time of the first instruction, and this application repeats this. I don't explain it.

Above, the present application provides the first instruction transmission time, the second instruction transmission time, and the time for the first terminal to perform resource reselection, and these times will be explained below through two examples.

Example 1, as shown in FIG. 8, the first terminal completed resource selection at time slot n, and resources w, x, y, z were selected. After the first terminal completes resource selection, the first resource set, or the first resource set and the first information, is determined to the second terminal at time slot r within the time period between u-Ti. Here, u indicates the first transmission time slot of the first terminal, and Ti indicates the first time slot. The first resource set includes resources w, x, y, z. The second terminal determines whether the resources in the first resource set satisfy the first condition, determines a second resource set, and feeds back the second resource set to the first terminal at time slot h. do. The second resource set includes resources w, y, and z. After receiving the second resource set at time slot h, the first terminal performs resource reselection for resources w, y, and z in the second resource set at time slot k within the time period u-Ti. Decide what to trigger. The first terminal first determines the resource listening window k-T0 to kT _proc,0 and the resource selection window k+T1 to k+T2, executes step 1 above, determines a candidate resource set, and further performs step 2 above. to select resources from the candidate resource set.

It needs to be explained that when performing resource reselection according to the resources in the second resource set, the reselected resources are in the same time slot as the resources in the first resource set that do not satisfy the first condition. It is necessary to avoid being in For example, in the process of reselecting w, y, and z by the first terminal, it is necessary to avoid the reselected resource and resource x being in the same time slot. Otherwise, there is a problem of transmitting multiple times within one time slot, and the first terminal does not have the ability to transmit multiple times in the same time slot, and thus does not match the capability of the first terminal.

Example 2, as shown in FIG. 9, the first terminal completed resource selection at time slot n, and resources w, x, y, z were selected. The first terminal transmits the first resource set or the first resource set and the first information to the second terminal using the side link control information in the PSCCH at time slot r for transmitting the PSSCH of resource w. Send. The first resource set includes the resources w, x, y indicated by the first sidelink control information, or the first resource set includes the resources x, which the first sidelink control information reserved. Contains y. The first information includes the priority of data to be transmitted by the first terminal and/or the resource reservation period used by the first terminal. The second terminal determines whether the resources in the first resource set satisfy the first condition, determines a second resource set, and feeds back the second resource set to the first terminal at time slot k. do. The second resource set includes resource x. After receiving the second resource set in time slot k, the first terminal provides resources for resource x in the second resource set in the time slot corresponding to time slot u-Ti within the time period u-Ti. Deciding to trigger reselection, u is the time slot of resource x, u is the time domain position of the resource in the first resource set with the lowest time domain position satisfying the first condition, and Ti is This is the first time period. The first terminal determines u-Ti-T _{proc, 0} from the resource listening window u-Ti-T0 and u-Ti+T2 from the resource selection window u-Ti+T1, performs step 1 above, and determines a candidate resource set. , execute step 2 above to select a resource from the candidate resource set.

It needs to be explained that when performing resource reselection according to the resources in the second resource set, the reselected resources must be in the same time slot as the resources in the first resource set that satisfy the first condition. There is a need to avoid it.

As described above, in the present application, the first terminal can instruct the second terminal to use the first resource set. The second terminal determines a second resource set and instructs the first terminal to the second resource set, thereby preventing the first terminal from having a half-duplex problem or interfering overlapping resources. knowledge, thereby triggering resource reselection of such resources and further improving the reliability of the communication system.

It should be understood that in the above embodiments, the second resource set may include resources that may or may not meet the first condition in the first resource set, and the second terminal may not be able to access the first terminal. the second resource set. However, in some cases, the second terminal may not indicate the second resource set, specifically as follows.

As an example, FIG. 10 is an interaction flowchart of a wireless communication method according to another embodiment of the present application, and as shown in FIG. 10, the method includes the following steps.

In step S1010, the first terminal transmits a first instruction to the second terminal to instruct the first resource set, and the first resource set is the time-frequency resource selected by the first terminal or the first resource set. 1 includes time-frequency resources indicated by one terminal by sidelink control information.

In step S1020, if a resource that satisfies the first condition exists in the first resource set, the second terminal transmits to the first terminal a second instruction for instructing the second resource set, The second resource set includes resources that meet or do not meet the first condition in the first resource set.

As an example, FIG. 11 is an interaction flowchart of a wireless communication method according to another embodiment of the present application, and as shown in FIG. 11, the method includes the following steps.

In step S1110, the first terminal transmits a first instruction to the second terminal to indicate a first resource set, and the first resource set is the time-frequency resource selected by the first terminal or the first resource set. 1 includes time-frequency resources indicated by one terminal by sidelink control information.

In step S1120, if the priority of the data to be transmitted by the second terminal is higher than the priority of the data to be transmitted by the first terminal, the second terminal instructs the first terminal to set the second resource. a second instruction to do so, the second resource set including resources that meet or do not meet the first condition in the first resource set;

It should be understood that as an alternative to step S1120, if the priority of the data to be transmitted by the second terminal is greater than or equal to the priority of the data to be transmitted by the first terminal, the second terminal The second instruction may be sent to the second instruction.

It should be understood that for the interpretation of each concept in the above two examples, reference may be made to the previous embodiments, and this application will not repeat the explanation thereto.

As described above, in the present application, none of the resources in the first resource set satisfy the first condition, or the priority of the data to be transmitted by the second terminal is higher than the priority of the data to be transmitted by the first terminal. If the second terminal does not point to the second resource set, i.e. there is no half-duplex or interference problem with the resources in the first resource set, and the first terminal does not need to reselect the resources. Therefore, it is possible to reduce the signaling overhead between the first terminal and the second terminal while ensuring the reliability of the communication system.

The method embodiments of the present application will now be described in detail with reference to FIGS. 7 to 11, and the apparatus embodiments of the present application will be described in detail with reference to FIGS. It should be understood that the method embodiments correspond to each other and that similar descriptions can refer to the method embodiments.

FIG. 12 is a schematic block diagram of a terminal 1200 according to an embodiment of the present application. As shown in FIG. 12, the terminal is a first terminal and includes a communication unit 1210 and a processing unit 1220, and the communication unit 1210 has a first terminal for instructing a first resource set to a second terminal. transmitting an indication, wherein the first resource set includes time-frequency resources selected by the first terminal or time-frequency resources indicated by the first terminal by sidelink control information; receiving a second instruction to indicate a set, the second resource set including resources that meet or do not meet the first condition in the first resource set; Processing unit 1220 is used to trigger resource reselection according to the second resource set.

Selectably, the first condition is
The resources in the first resource set cause the transmission resources of the first terminal to overlap with the transmission resources of the second terminal; and the resources in the first resource set cause the transmission resources of the first terminal to overlap with the transmission resources of the second terminal. A resource that overlaps with resource set No. 3 includes at least one of the conditions.

The third resource set is a resource set determined according to the resource indicated by the sidelink control information listened to by the second terminal and the resource reservation cycle. Alternatively, the third resource set is a resource set determined according to the resources indicated by the sidelink control information listened to by the second terminal.

Selectably, the first condition is
a condition in which the resource reservation period of the first terminal is the same as or a multiple of the resource reservation period of the second terminal;
a condition in which the priority of the data to be transmitted by the second terminal is higher than the priority of the data to be transmitted by the first terminal;
a condition in which the SL-RSRP of the PSCCH on which the sidelink control information listened to by the second terminal is located is equal to or higher than the RSRP threshold;
a condition in which the SL-RSRP of the PSSCH scheduled by the PSCCH is greater than or equal to the RSRP threshold;
A condition in which the resource reservation cycle in the sidelink control information listened to by the second terminal is the same as or a multiple of the resource reservation cycle of the first terminal, and the priority in the sidelink control information listened to by the second terminal is the same as the resource reservation cycle of the first terminal. It further includes at least one condition higher than the priority of the transmission target data of one terminal.

Selectably, the transmission resources of the first terminal are resources of the first resource set, or
The transmission resources of the first terminal are determined according to at least one of the resources of the first resource set, the resource reservation period of the first terminal, and a first random value, and the first random value is determined according to the first random value. one terminal is used to determine the number of periods in which the first terminal reserves a time-frequency resource selected by the first terminal or a time-frequency resource indicated by the sidelink control information.

Optionally, the transmission resources of the second terminal are resources in a fourth resource set, or
The transmission resource of the second terminal is determined according to at least one of the resources in the fourth resource set, the resource reservation period of the second terminal, and a second random value, and the second random value is The second terminal is used to determine the number of periods in which the second terminal reserves the time-frequency resources selected by the second terminal or the time-frequency resources indicated by the sidelink control information.

The fourth resource set includes time-frequency resources selected by the second terminal or time-frequency resources indicated by the sidelink control information.

Selectably, the first indication includes sidelink control information on the PSCCH transmitted by the first terminal, sidelink control information on the PSSCH transmitted by the first terminal, PC5-RRC signaling, and MAC CE. It will be posted.

Selectably, the first instruction includes a first frequency domain instruction and a first time domain instruction. The first frequency domain indication is used to indicate the frequency domain position of each resource in the first resource set, and the first time domain indication is used to indicate the time domain position of each resource in the first resource set. used for.

Optionally, the first frequency domain indication is an absolute indication or a relative indication to a preset frequency domain position. The first time domain indication is an absolute indication or a relative indication with respect to a preset time domain position.

Selectably, the transmission time of the first instruction is:
a first time after the first terminal completes resource selection;
any time between the time when the first terminal completes resource selection and the first transmission time of the first terminal;
the sum of the time for the first terminal to complete resource selection and a preset time offset amount;
and any time between the time when the first terminal completes resource selection and the first time, where the first time is the time when the first terminal transmits the PSSCH. This is the difference between the first transmission time of one terminal and the first time period.

Selectably, the second instruction includes sidelink control information on the PSCCH transmitted by the second terminal, sidelink control information on the PSSCH transmitted by the second terminal, PC5-RRC signaling, and MAC CE. It will be posted.

Selectably, the second instruction includes a second frequency domain instruction and a second time domain instruction. The second frequency domain indication is used to indicate the frequency domain position of each resource in the second resource set, and the second time domain indication is used to indicate the time domain position of each resource in the second resource set. used for

Optionally, the second frequency domain indication is an absolute indication or a relative indication to a preset frequency domain position. The second time domain indication is an absolute indication or a relative indication with respect to a preset time domain position.

Optionally, the second indication includes an index in the first resource set of each resource in the second resource set.

Selectably, the transmission time of the second instruction is
any time before a second time that is the time corresponding to the resource with the smallest time domain position in the first resource set;
any time before a third time that is the difference between the second time and the first time period;
Any time before a fourth time that satisfies the first condition in the first resource set and corresponds to the resource with the smallest time domain position;
any time before a fifth time that is the difference between the fourth time and the first time period;
any time earlier than or equal to the sixth time that is the transmission time for determining the second instruction indicated by the first terminal, and between the sixth time and the first time period; Any time earlier than or equal to the seventh time that is the difference.

Optionally, the communication unit 1210 is further used to transmit first information to the second terminal, the first information including a resource reservation period of the first terminal, a first random value, a first and a sixth time. The first random value is used to determine the number of periods in which the first terminal reserves the time-frequency resources selected by the first terminal or the time-frequency resources indicated by the sidelink control information. used. The sixth time is the transmission time for determining the second instruction given by the first terminal.

Optionally, the sixth time is an absolute time. Alternatively, the sixth time is a time offset amount with respect to the transmission time or reception time of the first information.

Selectably, the first information transmission time and the first instruction transmission time are the same or different.

The first information loading method and the first instruction loading method are selectably the same or different.

Optionally, the processing unit 1220 is specifically used to determine resources that satisfy the first condition based on the second set of resources and trigger resource reselection based on the resources that satisfy the first condition. be done.

Optionally, processing unit 1220 is specifically used to trigger resource reselection for resources that meet the first condition. or for a resource that satisfies the first condition in the process of re-evaluating the resource selected by the first terminal or determining whether the resource selected by the first terminal is preempted by another terminal. Trigger resource reselection.

Selectably, the time at which the first terminal performs the resource reselection is:
a first time after the time of receipt of the second instruction;
Any time between the reception time of the second instruction and a fourth time that satisfies the first condition in the first resource set and corresponds to the resource with the smallest time domain position;
any time between the time of receipt of the second instruction and a fifth time that is the difference between the fourth time and the first time period;
fifth time,
Any time between the reception time of the second instruction and the first transmission time of the first terminal;
Any time between the reception time of the second instruction and a first time that is the difference between the first transmission time of the first terminal and the first time zone;
including any of the first times.

Optionally, in some embodiments, the communication unit may be a communication interface or transceiver, or an input/output interface of a communication chip or on-chip system. The processing unit may be one or more processors.

The terminal 1200 according to the embodiment of the present application can correspond to the first terminal in the corresponding method embodiment of the present application of FIG. It should be understood that the corresponding flow of the first terminal of the method embodiment of the present application is realized and, for the sake of brevity, is not repeated here.

FIG. 13 is a schematic block diagram of a terminal 1300 according to an embodiment of the present application. As shown in FIG. 13, the terminal is a second terminal and includes a communication unit 1310 and a processing unit 1320. The communication unit 1310 is used to receive a first instruction transmitted by the first terminal for indicating a first set of resources, the first set of resources being selected by the first terminal. It includes frequency resources or time-frequency resources indicated by the first terminal by the sidelink control information. Processing unit 1320 is used to determine a second resource set, the second resource set including resources that meet or do not meet the first condition in the first resource set. The communication unit 1310 is further used to send a second instruction for indicating a second set of resources to the first terminal.

Selectably, the first condition is
The resources in the first resource set cause the transmission resources of the first terminal to overlap with the transmission resources of the second terminal; and the resources in the first resource set cause the transmission resources of the first terminal to overlap with the transmission resources of the second terminal. A resource that overlaps with resource set No. 3 includes at least one of the conditions.

The third resource set is a resource set determined according to the resource indicated by the sidelink control information listened to by the second terminal and the resource reservation cycle. Alternatively, the third resource set is a resource set determined according to the resources indicated by the sidelink control information listened to by the second terminal.

Selectably, the first condition is
a condition in which the resource reservation period of the first terminal is the same as or a multiple of the resource reservation period of the second terminal;
a condition in which the priority of the data to be transmitted by the second terminal is higher than the priority of the data to be transmitted by the first terminal;
a condition in which the SL-RSRP of the PSCCH on which the sidelink control information listened to by the second terminal is located is equal to or higher than the RSRP threshold;
a condition in which the SL-RSRP of the PSSCH scheduled by the PSCCH is greater than or equal to the RSRP threshold;
A condition in which the resource reservation cycle in the sidelink control information listened to by the second terminal is the same as or a multiple of the resource reservation cycle of the first terminal, and the priority in the sidelink control information listened to by the second terminal is the same as the resource reservation cycle of the first terminal. It further includes at least one condition higher than the priority of the transmission target data of one terminal.

Selectably, the transmission resources of the first terminal are resources of the first resource set, or
The transmission resources of the first terminal are determined according to at least one of the resources of the first resource set, the resource reservation period of the first terminal, and a first random value, and the first random value is determined according to the first random value. one terminal is used to determine the number of periods in which the first terminal reserves a time-frequency resource selected by the first terminal or a time-frequency resource indicated by the sidelink control information.

Optionally, the transmission resources of the second terminal are resources in a fourth resource set, or
The transmission resource of the second terminal is determined according to at least one of the resources in the fourth resource set, the resource reservation period of the second terminal, and a second random value, and the second random value is The second terminal is used to determine the number of periods in which the second terminal reserves the time-frequency resources selected by the second terminal or the time-frequency resources indicated by the sidelink control information.

The fourth resource set includes time-frequency resources selected by the second terminal or time-frequency resources indicated by the sidelink control information.

Selectably, the first indication includes sidelink control information on the PSCCH transmitted by the first terminal, sidelink control information on the PSSCH transmitted by the first terminal, PC5-RRC signaling, and MAC CE. It will be posted.

Selectably, the first instruction includes a first frequency domain instruction and a first time domain instruction. The first frequency domain indication is used to indicate the frequency domain position of each resource in the first resource set, and the first time domain indication is used to indicate the time domain position of each resource in the first resource set. used for.

Optionally, the first frequency domain indication is an absolute indication or a relative indication to a preset frequency domain position. The first time domain indication is an absolute indication or a relative indication with respect to a preset time domain position.

Selectably, the transmission time of the first instruction is:
a first time after the first terminal completes resource selection;
any time between the time when the first terminal completes resource selection and the first transmission time of the first terminal;
the sum of the time for the first terminal to complete resource selection and a preset time offset amount;
and any time between the time when the first terminal completes resource selection and the first time, where the first time is the time when the first terminal transmits the PSSCH. This is the difference between the first transmission time of one terminal and the first time period.

Selectably, the second instruction includes sidelink control information on the PSCCH transmitted by the second terminal, sidelink control information on the PSSCH transmitted by the second terminal, PC5-RRC signaling, and MAC CE. It will be posted.

Selectably, the second instruction includes a second frequency domain instruction and a second time domain instruction.
The second frequency domain indication is used to indicate the frequency domain position of each resource in the second resource set, and the second time domain indication is used to indicate the time domain position of each resource in the second resource set. used to.

Optionally, the second frequency domain indication is an absolute indication or a relative indication to a preset frequency domain position. The second time domain indication is an absolute indication or a relative indication with respect to a preset time domain position.

Optionally, the second indication includes an index in the first resource set of each resource in the second resource set.

Selectably, the transmission time of the second instruction is
any time before a second time that is the time corresponding to the resource with the smallest time domain position in the first resource set;
any time before a third time that is the difference between the second time and the first time period;
Any time before a fourth time that satisfies the first condition in the first resource set and corresponds to the resource with the smallest time domain position;
any time before a fifth time that is the difference between the fourth time and the first time period;
any time earlier than or equal to the sixth time that is the transmission time for determining the second instruction indicated by the first terminal, and between the sixth time and the first time period; Any time earlier than or equal to the seventh time that is the difference.

Optionally, the communication unit 1310 is further used to receive first information, the first information being a resource reservation period of the first terminal, a first random value, data to be transmitted by the first terminal. and a sixth time. The first random value is used to determine the number of periods in which the first terminal reserves the time-frequency resources selected by the first terminal or the time-frequency resources indicated by the sidelink control information. used. The sixth time is the transmission time for determining the second instruction given by the first terminal.

Optionally, the sixth time is an absolute time, or
The sixth time is a time offset amount with respect to the transmission time or reception time of the first information.

Selectably, the first information transmission time and the first instruction transmission time are the same or different.

The first information loading method and the first instruction loading method are selectably the same or different.

Selectably, the time at which the first terminal performs the resource reselection is:
a first time after the time of receipt of the second instruction;
Any time between the reception time of the second instruction and a fourth time that satisfies the first condition in the first resource set and corresponds to the resource with the smallest time domain position;
any time between the time of receipt of the second instruction and a fifth time that is the difference between the fourth time and the first time period;
fifth time,
Any time between the reception time of the second instruction and the first transmission time of the first terminal;
Any time between the reception time of the second instruction and the first time that is the difference between the first transmission time of the first terminal and the first time zone; and Any of the first time. Including.

Optionally, in some embodiments, the communication unit may be a communication interface or transceiver, or an input/output interface of a communication chip or on-chip system. The processing unit may be one or more processors.

The terminal 1300 according to the embodiment of the present application can correspond to the second terminal in the corresponding method embodiment of the present application of FIG. It should be understood that the corresponding flow of the second terminal of the method embodiment of the present application is not repeated here for the sake of simplicity and simplicity.

FIG. 14 is a schematic block diagram of a terminal 1400 according to an embodiment of the present application. As shown in FIG. 14, the terminal is a first terminal, and comprises a communication unit 1410 for transmitting a first instruction for instructing a second terminal to a first resource set, The resource set includes time-frequency resources selected by the first terminal or time-frequency resources indicated by the sidelink control information.

Optionally, in some embodiments, the communication unit may be a communication interface or transceiver, or an input/output interface of a communication chip or on-chip system. The processing unit may be one or more processors.

The terminal 1400 according to the embodiment of the present application can correspond to the first terminal in the corresponding method embodiment of the present application of FIG. 10 or FIG. or the corresponding flow of the first terminal of the corresponding method embodiment of the present application in FIG. 11, and for the sake of brevity, it should be understood that it is not repeated here.

FIG. 15 is a schematic block diagram of a terminal 1500 according to an embodiment of the present application. As shown in FIG. 15, the terminal is a second terminal and comprises a communication unit 1510 for receiving a first instruction sent by the first terminal for indicating a first resource set. , the first resource set includes time-frequency resources selected by the first terminal or time-frequency resources indicated by the sidelink control information. When a resource that satisfies the first condition exists in the first resource set, a second instruction for instructing the first terminal to use the second resource set is transmitted, and the second resource set is used as the first resource. Contains resources that do or do not meet the first condition in the set.

Optionally, in some embodiments, the communication unit may be a communication interface or transceiver, or an input/output interface of a communication chip or on-chip system. The processing unit may be one or more processors.

The terminal 1500 according to the embodiment of the present application can correspond to the second terminal in the corresponding method embodiment of the present application of FIG. It should be understood that the corresponding flow of the second terminal of the method embodiment of the present application is not repeated here for the sake of simplicity and simplicity.

FIG. 16 is a schematic block diagram of a terminal 1600 according to an embodiment of the present application. As shown in FIG. 16, the terminal is a second terminal and comprises a communication unit 1610 for receiving a first instruction sent by the first terminal for indicating a first resource set. , the first resource set includes time-frequency resources selected by the first terminal or time-frequency resources indicated by the sidelink control information. If the priority of the data to be transmitted by the second terminal is higher than the priority of the data to be transmitted by the first terminal, a second instruction for instructing the first terminal to use the second resource set is transmitted. , the second resource set includes resources that satisfy or do not satisfy the first condition in the first resource set.

Optionally, in some embodiments, the communication unit may be a communication interface or transceiver, or an input/output interface of a communication chip or on-chip system. The processing unit may be one or more processors.

The terminal 1600 according to the embodiment of the present application can correspond to the second terminal in the corresponding method embodiment of the present application of FIG. It should be understood that the corresponding flow of the second terminal of the method embodiment of the present application is not repeated here for the sake of simplicity and simplicity.

FIG. 17 is a schematic structural diagram of a communication device 1700 according to an embodiment of the present application. A communication device 1700 as shown in FIG. 17 includes a processor 1710 that is capable of recalling and operating a computer program from memory to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 17, communication device 1700 may further include memory 1720. Processor 1710 can recall and operate computer programs from memory 1720 to implement the methods of the present embodiments.

Memory 1720 may be a separate and independent device from processor 1710 or integrated into processor 1710.

Optionally, as shown in FIG. 17, the communication device 1700 may include a transceiver 1730, and the processor 1710 may control communications between the transceiver 1730 and other devices, and in particular may or may receive information or data sent by other devices.

Transceiver 1730 can include a transmitter and a receiver. Transceiver 1730 may further include antennas, and the number of antennas may be one or more.

Optionally, the communication device 1700 may specifically be a first terminal according to embodiments of the present application, and the communication device 1700 may correspond to the correspondence implemented by the first terminal in each method of the present embodiments. The flow can be realized and will not be repeated here for brevity.

Optionally, the communication device 1700 may specifically be a second terminal according to embodiments of the present application, and the communication device 1700 may correspond to the correspondence implemented by the second terminal in each method of the present embodiments. The flow can be realized and will not be repeated here for brevity.

FIG. 18 is a schematic structural diagram of an apparatus according to an embodiment of the present application. An apparatus 1800 as shown in FIG. 18 includes a processor 1810 that is capable of recalling and operating computer programs from memory to implement the methods in the embodiments of the present application.

Optionally, as shown in FIG. 18, device 1800 may further include memory 1820. Processor 1810 can recall and operate computer programs from memory 1820 to implement the methods of the present embodiments.

Memory 1820 may be a separate and independent device from processor 1810 or integrated into processor 1810.

Optionally, the device 1800 may further include an input interface 1830. Processor 1810 can control communication between the input interface 1830 and other devices or chips, and specifically can obtain information or data sent by other devices or chips.

Optionally, the device 1800 may further include an output interface 1840. The processor 1810 can control communication between the output interface 1840 and other devices or chips, and can specifically output information or data to other devices or chips.

Optionally, the apparatus is applicable to the first terminal in the embodiments of the present application and is capable of implementing a corresponding flow implemented by the first terminal in each method of the embodiments of the present application, for brevity. Therefore, I will not repeat the explanation here.

Optionally, the apparatus can be applied to the second terminal in the embodiments of the present application and implement a corresponding flow implemented by the second terminal in each method of the embodiments of the present application, for brevity Therefore, I will not repeat the explanation here.

Optionally, the devices mentioned in the embodiments of the present application may be chips. It may be a system level chip, a system chip, a chip system, an on-chip system chip, etc.

FIG. 19 is a schematic block diagram of a communication system 1900 according to an embodiment of the present application. As shown in FIG. 19, the communication system 1900 includes a first terminal 1910 and a second terminal 1920.

The first terminal 1910 can be used to implement the corresponding functionality implemented by the first terminal in the above method, and the second terminal 1920 can be used to implement the corresponding functionality implemented by the second terminal in the above method. It can be used to realize the corresponding functionality and will not be repeated here for brevity.

As can be appreciated, the processor in embodiments of the present application may be an integrated circuit chip and has signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by a hardware integrated logic circuit in a processor or by software-type instructions. The above processors include general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), and field programmable gate arrays (Field Programmable Gate). e Array, FPGA) or other programmable logic device , discrete gate or transistor logic devices, and discrete hardware components. Each method, step, and logical block diagram disclosed in the embodiments of the present application may be implemented or executed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The combined steps of the method disclosed in the embodiments of the present application can be performed and completed by a hardware decoding processor, or can be directly implemented by being performed and completed by a combination of hardware and software modules in a decoding processor. I can do it. The software modules may be located in well-known storage media such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in memory, and the processor reads information in the memory and combines the hardware to complete the steps of the method.

It can be appreciated that memory in embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. Non-volatile memory includes read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically erasable programmable read-only memory. It may be a memory (Electrically EPROM, EEPROM) or a flash memory. Volatile memory may be Random Access Memory (RAM) and is used as an external cache. By way of illustration and not limitation, multiple forms of RAM may be utilized, such as static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), and synchronous dynamic random access memory. Synchronous DRAM, SDRAM, Double Data Rate SDRAM, DDR SDRAM, Enhanced SDRAM, ESDRAM, Synchlink DRAM, SLDRAM ) and direct memory bus random access memory (Direct Rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein includes, but is not limited to, these and any other suitable types of memory.

It should be understood that the memory described above is merely an example and not a limiting description; for example, the memory in the embodiments of the present application may include static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (DRAM, SDRAM), double data rate synchronous dynamic random access memory (double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connected dynamic It may be a random access memory (synclink DRAM, SLDRAM), a direct memory bus random access memory (direct Rambus RAM, DR RAM), etc. Thus, memory in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

Embodiments of the present application further provide a computer readable storage medium for storing a computer program.

Optionally, the computer-readable storage medium is applicable to a network device or base station in the embodiments of the present application, and the computer program is configured to cause a computer to read a corresponding one implemented by the network device or base station in each of the methods of the embodiments of the present application. For the sake of running the flow and brevity, I won't repeat it here.

Optionally, the computer readable storage medium is applicable to the mobile terminal/terminal in the embodiments of the present application, and the computer program causes the computer to execute a corresponding flow implemented by the mobile terminal/terminal in each method of the embodiments of the present application. For the sake of implementation and brevity, it will not be repeated here.

Embodiments of the present application provide a computer program product that includes computer program instructions.

Optionally, the computer program product is applicable to a network device or base station in each of the embodiments of the present application, and the computer program instructions are configured to cause a computer to perform a corresponding process implemented by the network device or base station in each of the methods of the embodiments of the present application. For the sake of running the flow and brevity, I won't repeat it here.

Optionally, the computer program product is applicable to the mobile terminal/terminal in the embodiments of the present application, and the computer program instructions cause the computer to execute a corresponding flow implemented by the mobile terminal/terminal in each method of the embodiments of the present application. For the sake of implementation and brevity, it will not be repeated here.

Embodiments of the present application further provide a computer program product.

Optionally, the computer program is applicable to a network device or base station in each of the embodiments of the present application, and when the computer program is run on a computer, the computer program is implemented by the network device or base station in each of the methods of the embodiments of the present application. The corresponding flow is executed and will not be repeated here for the sake of brevity.

Optionally, the computer program is applicable to the mobile terminal/terminal in the embodiments of the present application, and when the computer program runs on the computer, the computer program is implemented by the mobile terminal/terminal in each method of the embodiments of the present application. The corresponding flow is executed and will not be repeated here for the sake of brevity.

Those skilled in the art will recognize that the units and algorithm steps of each example described in the examples disclosed herein can be combined and implemented in electronic hardware or a combination of computer software and electronic hardware. . Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Although those skilled in the art may implement the described functionality in different ways for each particular application, such implementation is not considered to be beyond the scope of this application.

Those skilled in the art will understand that for the convenience and brevity of explanation, the specific operating steps of the systems, devices and units described above can refer to the corresponding steps in the method embodiments above, and will be repeated here. I clearly understand that I will not explain anything.

It should be understood that in some embodiments according to the present application, the disclosed systems, apparatus, and methods can be implemented in other ways. For example, the above device embodiments are merely illustrative; for example, the division of the units is only division of logic functions, and in actual implementation there may be other division methods, for example, multiple units. or the assembly parts may be combined or integrated into separate systems, or some features may be ignored or not implemented. Also, the couplings or direct couplings or communication connections between each other as indicated or discussed may be indirect couplings or communication connections through some interface, device or unit, electrical, mechanical or in the form thereof. The connection may be as follows.

The units described as separate members above may or may not be physically separated, and the members indicated as units may or may not be physical units. , that is, it may be located at one location or distributed over multiple network units. The purpose of this embodiment can be achieved by selecting some or all of the units according to actual demand.

Further, each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may physically exist independently, or two or more units may be integrated into one processing unit. They may be integrated into one unit.

If the functionality is implemented in the form of a software functional unit and is sold or used as an independent product, it can be stored on a single computer-readable storage medium. Based on this understanding, the technical solution of the embodiments of the present application may be essential or a part that contributes to the prior art, or a part of the technical solution may be expressed in the form of a software product, and the computer A software product is stored in one storage medium, and one computer equipment (such as a personal computer, a server, or a network equipment) executes all or part of the method described in each embodiment of the present invention. Contains some instructions. The storage medium mentioned above is a medium capable of storing various program codes, such as a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a disk, or a CD. be.

As mentioned above, although the present application is only a specific embodiment, the protection scope of the present application is not limited thereto, and changes or substitutions that anyone skilled in the art can easily come up with within the technical scope disclosed by the present application, All are included in the protection scope of this application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims (91)

A wireless communication method,
the first terminal transmits a first instruction for instructing a second terminal to a first resource set, the first resource set being a time frequency selected by the first terminal; resources or time-frequency resources indicated by the first terminal by sidelink control information;
the first terminal receiving a second instruction for indicating a second resource set, the second resource set satisfying a first condition in the first resource set, or a step that includes a resource that does not satisfy the
A wireless communication method, comprising: causing the first terminal to trigger resource reselection based on the second resource set. The first condition is:
A condition in which the resources in the first resource set cause the transmission resources of the first terminal to overlap with the transmission resources of the second terminal; and the resources in the first resource set make it possible for the first terminal to includes at least one condition in which the transmission resource of overlaps with the third resource set,
The third resource set is a resource set determined according to the resource and resource reservation cycle indicated by the sidelink control information listened to by the second terminal, or the third resource set is The method of claim 1, wherein the resource set is determined according to resources indicated by sidelink control information listened to by the second terminal. The first condition is:
a condition in which the resource reservation period of the first terminal and the resource reservation period of the second terminal are the same or have a multiple relationship;
a condition in which the priority of the data to be transmitted by the second terminal is higher than the priority of the data to be transmitted by the first terminal;
a condition in which the sidelink-reference signal received power (SL-RSRP) of the physical sidelink control channel (PSCCH) in which the sidelink control information listened to by the second terminal is located is greater than or equal to an RSRP threshold;
a condition in which the SL-RSRP of the physical sidelink shared channel (PSSCH) scheduled by the PSCCH is greater than or equal to an RSRP threshold;
a condition in which the resource reservation cycle in the sidelink control information listened to by the second terminal and the resource reservation cycle of the first terminal are the same or in a multiple relationship; and priority in the sidelink control information listened to by the second terminal. 3. The method according to claim 2, wherein the priority level includes at least one condition higher than the priority level of the data to be transmitted by the first terminal. the transmission resources of the first terminal are resources of the first resource set, or
The transmission resource of the first terminal is determined according to at least one of the resources of the first resource set, the resource reservation period of the first terminal, and a first random value, and the transmission resource of the first terminal The value is used to determine the number of periods in which the first terminal reserves a time-frequency resource selected by the first terminal or a time-frequency resource indicated by the first terminal by sidelink control information. The method according to claim 2 or 3, characterized in that: the transmission resources of the second terminal are resources in a fourth resource set, or
The transmission resource of the second terminal is determined according to at least one of the resources in the fourth resource set, the resource reservation period of the second terminal, and a second random value, and The random value is for determining the number of periods in which the second terminal reserves a time-frequency resource selected by the second terminal or a time-frequency resource indicated by the second terminal by sidelink control information. used,
4. The fourth resource set includes time-frequency resources selected by the second terminal or time-frequency resources instructed by the second terminal using sidelink control information. Method described. The first instruction includes side link control information on the PSCCH transmitted by the first terminal, side link control information on the PSSCH transmitted by the first terminal, PC5-radio resource control RRC signaling, and media access control control unit. (MAC CE). the first instruction includes a first frequency domain instruction and a first time domain instruction;
The first frequency domain indication is used to indicate the frequency domain location of each resource in the first resource set, and the first time domain indication is used to indicate the time domain location of each resource in the first resource set. 7. A method according to any one of claims 1 to 6, characterized in that it is used for indicating a position. The first frequency domain instruction is an absolute instruction or a relative instruction to a preset frequency domain position, and the first time domain instruction is an absolute instruction or a relative instruction to a preset time domain position. 8. A method according to claim 7, characterized in that there is. The transmission time of the first instruction is:
a first time after the first terminal completes resource selection;
any time between the time when the first terminal completes resource selection and the first transmission time of the first terminal;
the sum of the time for the first terminal to complete resource selection and a preset time offset;
a time during which the first terminal transmits a PSSCH; and a time between a time when the first terminal completes resource selection and a first time; A method according to any one of claims 1 to 8, characterized in that the time is the difference between the first transmission time of the first terminal and a first time period. The second instruction is carried in any one of sidelink control information in the PSCCH transmitted by the second terminal, sidelink control information in the PSSCH transmitted by the second terminal, PC5-RRC signaling, and MAC CE. 10. A method according to any one of claims 1 to 9, characterized in that: the second instruction includes a second frequency domain instruction and a second time domain instruction;
The second frequency domain indication is used to indicate the frequency domain location of each resource in the second resource set, and the second time domain indication is used to indicate the time domain location of each resource in the second resource set. Method according to any one of the preceding claims, characterized in that it is used for indicating a position. The second frequency domain instruction is an absolute instruction or an instruction relative to a preset frequency domain position, and the second time domain instruction is an absolute instruction or an instruction relative to a preset time domain position. 12. The method of claim 11. 10. A method according to any preceding claim, wherein the second indication comprises an index in the first resource set of each resource in the second resource set. The transmission time of the second instruction is:
any time before a second time that is a time corresponding to a resource with the smallest time domain position in the first resource set;
Any time before a third time that is the difference between the second time and the first time period,
Any time before a fourth time that satisfies the first condition in the first resource set and corresponds to a resource with the smallest time domain position;
Any time before a fifth time that is the difference between the fourth time and the first time period,
any time that is earlier than or equal to a sixth time that is the transmission time for determining the second instruction indicated by the first terminal; and the sixth time and the first 14. A method according to claims 1-13, characterized in that the method is any time earlier than or equal to a seventh time which is a difference from a time zone. The first terminal further includes the step of transmitting first information to the second terminal, the first information including a resource reservation period of the first terminal, a first random value, and the first The priority of the data to be transmitted by the terminal, including at least one of the sixth time,
The first random value is the number of cycles in which the first terminal reserves the time-frequency resource selected by the first terminal or the time-frequency resource indicated by the sidelink control information. 15. Any one of claims 1 to 14, characterized in that the sixth time is a transmission time for determining the second instruction given by the first terminal. The method described in Section 1. the sixth time is an absolute time, or
16. The method of claim 15, wherein the sixth time is a time offset amount with respect to the transmission time or reception time of the first information. The method according to claim 15 or 16, characterized in that the transmission time of the first information and the transmission time of the first instruction are the same or different. 17. The method according to claim 15, wherein the first information loading method and the first instruction loading method are the same or different. the first terminal triggering resource reselection based on the second resource set;
the first terminal determining a resource that satisfies the first condition based on the second resource set;
19. A method according to any one of claims 1-18, characterized in that the first terminal triggers resource reselection based on resources satisfying the first condition. The first terminal triggers resource reselection based on the resources that satisfy the first condition,
the first terminal triggers resource reselection for resources that satisfy the first condition, or
The first terminal, in the process of re-evaluating the resource selected by the first terminal or determining whether the resource selected by the first terminal is preempted by another terminal, 20. The method of claim 19, comprising triggering resource reselection for resources that meet the condition. The time when the first terminal performs resource reselection is
a first time after the time of receipt of the second instruction;
Any time between the reception time of the second instruction and a fourth time that satisfies the first condition in the first resource set and corresponds to a resource with the smallest time domain position. time of,
Any time between the reception time of the second instruction and a fifth time that is the difference between the fourth time and the first time zone,
the fifth time;
Any time between the reception time of the second instruction and the first transmission time of the first terminal,
any time between the reception time of the second instruction and a first time that is the difference between the first transmission time of the first terminal and the first time zone; and the first time. 21. A method according to any one of claims 1-20, characterized in that it comprises any of the following. A wireless communication method,
a second terminal receiving a first instruction transmitted by a first terminal to indicate a first resource set, the first resource set being a first instruction transmitted by the first terminal; including a selected time-frequency resource or a time-frequency resource indicated by the first terminal by sidelink control information;
the second terminal determining a second resource set, the second resource set including resources that either satisfy or do not satisfy the first condition in the first resource set;
A wireless communication method comprising: the second terminal transmitting a second instruction for instructing the first terminal to use the second resource set. The first condition is:
A condition in which the resources in the first resource set cause the transmission resources of the first terminal to overlap with the transmission resources of the second terminal; and the resources in the first resource set make it possible for the first terminal to includes at least one condition in which the transmission resource of overlaps with the third resource set,
The third resource set is a resource set determined according to the resource and resource reservation cycle indicated by the sidelink control information listened to by the second terminal, or the third resource set is The method of claim 22, wherein the resource set is determined according to resources indicated by sidelink control information listened to by the second terminal. The first condition is:
a condition in which the resource reservation period of the first terminal and the resource reservation period of the second terminal are the same or have a multiple relationship;
a condition in which the priority of the data to be transmitted by the second terminal is higher than the priority of the data to be transmitted by the first terminal;
a condition in which the SL-RSRP of the PSCCH on which the sidelink control information listened to by the second terminal is located is equal to or higher than an RSRP threshold;
a condition in which the SL-RSRP of the PSSCH scheduled by the PSCCH is greater than or equal to an RSRP threshold;
a condition in which the resource reservation cycle in the sidelink control information listened to by the second terminal and the resource reservation cycle of the first terminal are the same or in a multiple relationship; and priority in the sidelink control information listened to by the second terminal. 24. The method of claim 23, further comprising at least one condition in which the priority level is higher than the priority level of the data to be transmitted by the first terminal. the transmission resources of the first terminal are resources of the first resource set, or
The transmission resource of the first terminal is determined according to at least one of the resources of the first resource set, the resource reservation period of the first terminal, and a first random value, and the transmission resource of the first terminal The value is used to determine the number of periods in which the first terminal reserves a time-frequency resource selected by the first terminal or a time-frequency resource indicated by the first terminal by sidelink control information. 25. The method according to claim 23 or 24, characterized in that: the transmission resources of the second terminal are resources in a fourth resource set, or
The transmission resource of the second terminal is determined according to at least one of the resources in the fourth resource set, the resource reservation period of the second terminal, and a second random value, and The random value is for determining the number of periods in which the second terminal reserves a time-frequency resource selected by the second terminal or a time-frequency resource indicated by the second terminal by sidelink control information. used,
25. The fourth resource set includes time-frequency resources selected by the second terminal or time-frequency resources indicated by the second terminal by sidelink control information. Method described. The first instruction is carried in any one of sidelink control information in the PSCCH transmitted by the first terminal, sidelink control information in the PSSCH transmitted by the first terminal, PC5-RRC signaling, and MAC CE. 27. A method according to any one of claims 22-26, characterized in that: the first instruction includes a first frequency domain instruction and a first time domain instruction;
The first frequency domain indication is used to indicate the frequency domain location of each resource in the first resource set, and the first time domain indication is used to indicate the time domain location of each resource in the first resource set. 28. A method according to any one of claims 22-27, characterized in that it is used for indicating a position. The first frequency domain instruction is an absolute instruction or a relative instruction to a preset frequency domain position, and the first time domain instruction is an absolute instruction or a relative instruction to a preset time domain position. 29. A method according to claim 28, characterized in that. The transmission time of the first instruction is:
a first time after the first terminal completes resource selection;
any time between the time when the first terminal completes resource selection and the first transmission time of the first terminal;
the sum of the time for the first terminal to complete resource selection and a preset time offset;
the time at which the first terminal transmits the PSSCH;
The first time includes any time between the time when the first terminal completes resource selection and the first time, and the first time is the time between the first transmission time of the first terminal and the first time. 30. A method according to any one of claims 22-29, characterized in that the difference is from one time zone to another. The second instruction is carried in any one of sidelink control information in the PSCCH transmitted by the second terminal, sidelink control information in the PSSCH transmitted by the second terminal, PC5-RRC signaling, and MAC CE. 31. A method according to any one of claims 22-30, characterized in that: the second instruction includes a second frequency domain instruction and a second time domain instruction;
The second frequency domain indication is used to indicate the frequency domain location of each resource in the second resource set, and the second time domain indication is used to indicate the time domain location of each resource in the second resource set. 32. A method according to any one of claims 22-31, characterized in that it is used for indicating a position. The second frequency domain instruction is an absolute instruction or an instruction relative to a preset frequency domain position, and the second time domain instruction is an absolute instruction or an instruction relative to a preset time domain position. 33. A method according to claim 32, characterized in that. 31. A method according to any one of claims 22-30, characterized in that the second indication comprises an index in the first resource set of each resource in the second resource set. The transmission time of the second instruction is:
any time before a second time that is a time corresponding to a resource with the smallest time domain position in the first resource set;
Any time before a third time that is the difference between the second time and the first time period,
Any time before a fourth time that satisfies the first condition in the first resource set and corresponds to a resource with the smallest time domain position;
Any time before a fifth time that is the difference between the fourth time and the first time period,
any time that is earlier than or equal to a sixth time that is the transmission time for determining the second instruction indicated by the first terminal; and the sixth time and the first 35. A method according to any one of claims 22 to 34, characterized in that the time is either earlier than or equal to a seventh time that is different from a time zone. The second terminal further includes the step of receiving first information, the first information including a resource reservation period of the first terminal, a first random value, and data to be transmitted by the first terminal. a priority of, at least one of a sixth time;
The first random value is the number of cycles in which the first terminal reserves the time-frequency resource selected by the first terminal or the time-frequency resource indicated by the sidelink control information. 36. Any one of claims 22-35, characterized in that the sixth time is a transmission time for determining the second instruction indicated by the first terminal. The method described in Section 1. the sixth time is an absolute time, or
37. The method of claim 36, wherein the sixth time is a time offset with respect to a transmission time or reception time of the first information. 38. A method according to claim 36 or 37, characterized in that the transmission time of the first information and the transmission time of the first instruction are the same or different. 38. The method according to claim 36 or 37, wherein the first information loading method and the first instruction loading method are the same or different. The time when the first terminal performs resource reselection is
a first time after the time of receipt of the second instruction;
Any time between the reception time of the second instruction and a fourth time that satisfies the first condition in the first resource set and corresponds to a resource with the smallest time domain position. time of,
Any time between the reception time of the second instruction and a fifth time that is the difference between the fourth time and the first time zone,
the fifth time;
Any time between the reception time of the second instruction and the first transmission time of the first terminal,
any time between the reception time of the second instruction and a first time that is the difference between the first transmission time of the first terminal and the first time zone; and the first time. 40. A method according to any one of claims 22-39, characterized in that: A wireless communication method,
the first terminal transmits a first instruction for instructing a second terminal to a first resource set, the first resource set being a time frequency selected by the first terminal; A wireless communication method, comprising the step of including a resource or a time-frequency resource indicated by the first terminal by sidelink control information. A wireless communication method,
a second terminal receiving a first instruction transmitted by a first terminal to indicate a first resource set, the first resource set being a first instruction transmitted by the first terminal; including a selected time-frequency resource or a time-frequency resource indicated by the first terminal by sidelink control information;
If a resource that satisfies the first condition exists in the first resource set, the second terminal transmits a second instruction to the first terminal, the second instruction being a second instruction. the second resource set includes a resource that satisfies or does not satisfy the first condition in the first resource set. Communication method. A wireless communication method,
a second terminal receiving a first instruction transmitted by a first terminal to indicate a first resource set, the first resource set being a first instruction transmitted by the first terminal; including a selected time-frequency resource or a time-frequency resource indicated by the first terminal by sidelink control information;
If the priority of the data to be transmitted by the second terminal is higher than the priority of the data to be transmitted by the first terminal, the second terminal instructs the first terminal to set a second resource. The second resource set includes a resource that satisfies or does not satisfy the first condition in the first resource set. Wireless communication method. a terminal, the terminal being a first terminal;
transmitting a first instruction to indicate a first resource set to a second terminal, the first resource set being a time-frequency resource selected by the first terminal or the first resource set; including time-frequency resources indicated by the terminal by the sidelink control information;
receiving a second instruction for instructing a second resource set, the second resource set including a resource that satisfies or does not satisfy a first condition in the first resource set; and a communication unit used for,
a processing unit for triggering resource reselection based on the second resource set. The first condition is:
A condition in which the resources in the first resource set cause the transmission resources of the first terminal to overlap with the transmission resources of the second terminal; and the resources in the first resource set make it possible for the first terminal to includes at least one condition in which the transmission resource of overlaps with the third resource set,
The third resource set is a resource set determined according to the resource and resource reservation cycle indicated by the sidelink control information listened to by the second terminal, or the third resource set is The terminal according to claim 44, wherein the resource set is determined according to resources indicated by sidelink control information listened to by the second terminal. The first condition is:
a condition in which the resource reservation period of the first terminal and the resource reservation period of the second terminal are the same or have a multiple relationship;
a condition in which the priority of the data to be transmitted by the second terminal is higher than the priority of the data to be transmitted by the first terminal;
a condition in which the SL-RSRP of the PSCCH on which the sidelink control information listened to by the second terminal is located is equal to or higher than an RSRP threshold;
a condition in which the SL-RSRP of the PSSCH scheduled by the PSCCH is greater than or equal to an RSRP threshold;
a condition in which the resource reservation cycle in the sidelink control information listened to by the second terminal and the resource reservation cycle of the first terminal are the same or in a multiple relationship; and priority in the sidelink control information listened to by the second terminal. 46. The terminal according to claim 45, wherein the priority level includes at least one condition higher than the priority level of the data to be transmitted by the first terminal. the transmission resources of the first terminal are resources of the first resource set, or
The transmission resource of the first terminal is determined according to at least one of the resources of the first resource set, the resource reservation period of the first terminal, and a first random value, and the transmission resource of the first terminal The value is used to determine the number of periods in which the first terminal reserves a time-frequency resource selected by the first terminal or a time-frequency resource indicated by the first terminal by sidelink control information. 47. The terminal according to claim 45 or 46. the transmission resources of the second terminal are resources in a fourth resource set, or
The transmission resource of the second terminal is determined according to at least one of the resources in the fourth resource set, the resource reservation period of the second terminal, and a second random value, and The random value is for determining the number of periods in which the second terminal reserves a time-frequency resource selected by the second terminal or a time-frequency resource indicated by the second terminal by sidelink control information. used,
47. The fourth resource set includes time-frequency resources selected by the second terminal or time-frequency resources indicated by the second terminal by sidelink control information. The device listed. The first instruction is carried in any one of sidelink control information in the PSCCH transmitted by the first terminal, sidelink control information in the PSSCH transmitted by the first terminal, PC5-RRC signaling, and MAC CE. 49. A terminal according to any one of claims 44 to 48, characterized in that the terminal is the first instruction includes a first frequency domain instruction and a first time domain instruction;
The first frequency domain indication is used to indicate the frequency domain location of each resource in the first resource set, and the first time domain indication is used to indicate the time domain location of each resource in the first resource set. 50. Terminal according to any one of claims 44-49, characterized in that it is used for indicating a location. The first frequency domain instruction is an absolute instruction or a relative instruction to a preset frequency domain position, and the first time domain instruction is an absolute instruction or a relative instruction to a preset time domain position. 51. A terminal according to claim 50. The transmission time of the first instruction is:
a first time after the first terminal completes resource selection;
any time between the time when the first terminal completes resource selection and the first transmission time of the first terminal;
the sum of the time for the first terminal to complete resource selection and a preset time offset;
the time at which the first terminal transmits the PSSCH;
The first time includes any time between the time when the first terminal completes resource selection and the first time, and the first time is the time between the first transmission time of the first terminal and the first time. 52. The terminal according to any one of claims 44 to 51, wherein the terminal is different from a time zone of 1. The second instruction is carried in any one of sidelink control information in the PSCCH transmitted by the second terminal, sidelink control information in the PSSCH transmitted by the second terminal, PC5-RRC signaling, and MAC CE. 53. The terminal according to any one of claims 44 to 52, characterized in that: the second instruction includes a second frequency domain instruction and a second time domain instruction;
The second frequency domain indication is used to indicate the frequency domain location of each resource in the second resource set, and the second time domain indication is used to indicate the time domain location of each resource in the second resource set. 54. Terminal according to any one of claims 44-53, characterized in that it is used for indicating a location. The second frequency domain instruction is an absolute instruction or an instruction relative to a preset frequency domain position, and the second time domain instruction is an absolute instruction or an instruction relative to a preset time domain position. 55. A terminal according to claim 54, characterized in that there is. 53. The terminal according to any one of claims 44 to 52, wherein the second indication includes an index in the first resource set of each resource in the second resource set. The transmission time of the second instruction is:
any time before a second time that is a time corresponding to a resource with the smallest time domain position in the first resource set;
Any time before a third time that is the difference between the second time and the first time period,
Any time before a fourth time that satisfies the first condition in the first resource set and corresponds to a resource with the smallest time domain position;
Any time before a fifth time that is the difference between the fourth time and the first time period,
any time that is earlier than or equal to a sixth time that is the transmission time for determining the second instruction indicated by the first terminal; and the sixth time and the first 57. The terminal according to any one of claims 44 to 56, characterized in that the terminal is at a time earlier than or equal to a seventh time that is a difference from a time zone. The communication unit is further used to transmit first information to the second terminal, the first information including a resource reservation period of the first terminal, a first random value, a first The priority of the data to be transmitted by the terminal, including at least one of the sixth time,
The first random value is the number of cycles in which the first terminal reserves the time-frequency resource selected by the first terminal or the time-frequency resource indicated by the sidelink control information. 58. Any one of claims 44-57, characterized in that the sixth time is a transmission time for determining the second instruction indicated by the first terminal. The terminal described in Section 1. the sixth time is an absolute time, or
59. The terminal according to claim 58, wherein the sixth time is a time offset amount with respect to the transmission time or reception time of the first information. 60. The terminal according to claim 58 or 59, wherein the transmission time of the first information and the transmission time of the first instruction are the same or different. 60. The terminal according to claim 58 or 59, wherein the first information loading method and the first instruction loading method are the same or different. Specifically, the processing unit includes:
determining a resource that satisfies the first condition based on the second resource set;
62. The terminal according to claim 44, wherein the terminal is used to trigger resource reselection based on resources that satisfy the first condition. Specifically, the processing unit:
triggering resource reselection for resources that meet the first condition, or
In the process of re-evaluating the resource selected by the first terminal or determining whether the resource selected by the first terminal is preempted by another terminal, for the resource satisfying the first condition. 63. The terminal according to claim 62, wherein the terminal triggers resource reselection. The time when the first terminal performs resource reselection is
a first time after the time of receipt of the second instruction;
Any time between the reception time of the second instruction and a fourth time that satisfies the first condition in the first resource set and corresponds to a resource with the smallest time domain position. time of,
Any time between the reception time of the second instruction and a fifth time that is the difference between the fourth time and the first time zone,
the fifth time;
Any time between the reception time of the second instruction and the first transmission time of the first terminal,
any time between the reception time of the second instruction and a first time that is the difference between the first transmission time of the first terminal and the first time zone; and the first time. 64. A terminal according to any one of claims 44 to 63, characterized in that it comprises one of the following. A terminal, the terminal being a second terminal, comprising a communication unit and a processing unit,
The communication unit is used to receive a first instruction transmitted from a first terminal, the first instruction is used to indicate a first resource set, and the first resource set is , including a time-frequency resource selected by the first terminal or a time-frequency resource indicated by the first terminal by sidelink control information;
the processing unit is used to determine a second resource set, the second resource set including resources that meet or do not meet the first condition in the first resource set;
The terminal, wherein the communication unit is further used to transmit a second instruction to the first terminal, and the second instruction is used to indicate the second resource set. The first condition is:
A condition in which the resources in the first resource set cause the transmission resources of the first terminal to overlap with the transmission resources of the second terminal; and the resources in the first resource set make it possible for the first terminal to includes at least one condition in which the transmission resource of overlaps with the third resource set,
The third resource set is a resource set determined according to the resource and resource reservation cycle indicated by the sidelink control information listened to by the second terminal, or the third resource set is 66. The terminal according to claim 65, wherein the resource set is determined according to resources indicated by sidelink control information listened to by the second terminal. The first condition is:
a condition in which the resource reservation period of the first terminal and the resource reservation period of the second terminal are the same or have a multiple relationship;
a condition in which the priority of the data to be transmitted by the second terminal is higher than the priority of the data to be transmitted by the first terminal;
a condition in which the SL-RSRP of the PSCCH on which the sidelink control information listened to by the second terminal is located is equal to or higher than an RSRP threshold;
a condition in which the SL-RSRP of the PSSCH scheduled by the PSCCH is greater than or equal to an RSRP threshold;
a condition in which the resource reservation cycle in the sidelink control information listened to by the second terminal and the resource reservation cycle of the first terminal are the same or in a multiple relationship; and priority in the sidelink control information listened to by the second terminal. 67. The terminal according to claim 66, wherein the priority further includes at least one condition higher than the priority of the data to be transmitted of the first terminal. the transmission resources of the first terminal are resources of the first resource set, or
The transmission resource of the first terminal is determined according to at least one of the resources of the first resource set, the resource reservation period of the first terminal, and a first random value, and the transmission resource of the first terminal The value is used to determine the number of periods in which the first terminal reserves a time-frequency resource selected by the first terminal or a time-frequency resource indicated by the first terminal by sidelink control information. 68. The terminal according to claim 66 or 67. the transmission resources of the second terminal are resources in a fourth resource set, or
The transmission resource of the second terminal is determined according to at least one of the resources in the fourth resource set, the resource reservation period of the second terminal, and a second random value, and The random value is for determining the number of periods in which the second terminal reserves a time-frequency resource selected by the second terminal or a time-frequency resource indicated by the second terminal by sidelink control information. used,
68. The fourth resource set includes time-frequency resources selected by the second terminal or time-frequency resources indicated by the second terminal by sidelink control information. The device listed. The first instruction is carried in any one of sidelink control information in the PSCCH transmitted by the first terminal, sidelink control information in the PSSCH transmitted by the first terminal, PC5-RRC signaling, and MAC CE. 70. A terminal according to any one of claims 65-69, characterized in that: the first instruction includes a first frequency domain instruction and a first time domain instruction;
The first frequency domain indication is used to indicate the frequency domain location of each resource in the first resource set, and the first time domain indication is used to indicate the time domain location of each resource in the first resource set. 71. Terminal according to any one of claims 65-70, characterized in that it is used for indicating a location. The first frequency domain instruction is an absolute instruction or a relative instruction to a preset frequency domain position, and the first time domain instruction is an absolute instruction or a relative instruction to a preset time domain position. 72. A terminal according to claim 71, characterized in that there is. The transmission time of the first instruction is:
a first time after the first terminal completes resource selection;
any time between the time when the first terminal completes resource selection and the first transmission time of the first terminal;
the sum of the time for the first terminal to complete resource selection and a preset time offset;
a time during which the first terminal transmits a PSSCH; and a time between a time when the first terminal completes resource selection and a first time; 73. The terminal according to claim 65, wherein the time is a difference between a first transmission time of the first terminal and a first time period. The second instruction is carried in any one of sidelink control information in the PSCCH transmitted by the second terminal, sidelink control information in the PSSCH transmitted by the second terminal, PC5-RRC signaling, and MAC CE. 74. The terminal according to any one of claims 65-73, characterized in that: the second instruction includes a second frequency domain instruction and a second time domain instruction;
The second frequency domain indication is used to indicate the frequency domain location of each resource in the second resource set, and the second time domain indication is used to indicate the time domain location of each resource in the second resource set. 75. Terminal according to any one of claims 65-74, characterized in that it is used for indicating a location. The second frequency domain instruction is an absolute instruction or an instruction relative to a preset frequency domain position, and the second time domain instruction is an absolute instruction or an instruction relative to a preset time domain position. 76. A terminal according to claim 75. 74. The terminal according to any one of claims 65-73, wherein the second indication includes an index in the first resource set of each resource in the second resource set. The transmission time of the second instruction is:
any time before a second time that is a time corresponding to a resource with the smallest time domain position in the first resource set;
Any time before a third time that is the difference between the second time and the first time period,
Any time before a fourth time that satisfies the first condition in the first resource set and corresponds to a resource with the smallest time domain position;
Any time before a fifth time that is the difference between the fourth time and the first time period,
any time that is earlier than or equal to a sixth time that is the transmission time for determining the second instruction indicated by the first terminal; and the sixth time and the first 78. The terminal according to any one of claims 65 to 77, characterized in that the terminal is at a time earlier than or equal to a seventh time that is a difference from a time zone. The communication unit is further used to receive first information, the first information including a resource reservation period of the first terminal, a first random value, and data to be transmitted by the first terminal. a priority of, at least one of a sixth time;
The first random value is the number of cycles in which the first terminal reserves the time-frequency resource selected by the first terminal or the time-frequency resource indicated by the sidelink control information. 79. Any one of claims 65-78, characterized in that the sixth time is a transmission time for determining the second instruction indicated by the first terminal. The terminal described in Section 1. the sixth time is an absolute time, or
80. The terminal according to claim 79, wherein the sixth time is a time offset amount with respect to the transmission time or reception time of the first information. 81. The terminal according to claim 79 or 80, wherein the transmission time of the first information and the transmission time of the first instruction are the same or different. 81. The terminal according to claim 79 or 80, wherein the first information loading method and the first instruction loading method are the same or different. The time when the first terminal performs resource reselection is
a first time after the time of receipt of the second instruction;
Any time between the reception time of the second instruction and a fourth time that satisfies the first condition in the first resource set and corresponds to a resource with the smallest time domain position. time of,
Any time between the reception time of the second instruction and a fifth time that is the difference between the fourth time and the first time zone,
the fifth time;
Any time between the reception time of the second instruction and the first transmission time of the first terminal,
any time between the reception time of the second instruction and a first time that is the difference between the first transmission time of the first terminal and the first time zone; and the first time. 83. A terminal according to any one of claims 65-82, characterized in that it comprises one of the following. a terminal, the terminal being a first terminal;
a communication unit for transmitting a first instruction for indicating a first resource set to a second terminal, said first resource set being a time-frequency resource selected by said first terminal or said first resource set; A terminal characterized in that the first terminal includes time-frequency resources indicated by sidelink control information. A terminal, the terminal being a second terminal and comprising a communication unit;
receiving a first instruction transmitted by a first terminal to indicate a first resource set, the first resource set being a time-frequency resource selected by the first terminal; or including time-frequency resources indicated by the first terminal by sidelink control information;
If a resource that satisfies the first condition exists in the first resource set, transmitting a second instruction for instructing the first terminal to use the second resource set; A terminal characterized in that the resource set is used to include resources that satisfy or do not satisfy the first condition in the first resource set. A terminal, the terminal being a second terminal and comprising a communication unit, the communication unit comprising:
receiving a first instruction transmitted by a first terminal to indicate a first resource set, the first resource set being a time-frequency resource selected by the first terminal; or including time-frequency resources indicated by the first terminal by sidelink control information;
If the priority of the data to be transmitted by the second terminal is higher than the priority of the data to be transmitted by the first terminal, a second instruction for instructing the first terminal to use a second resource set is provided. A terminal characterized in that the second resource set includes resources that satisfy or do not satisfy a first condition in the first resource set. 44. A method according to any one of claims 1 to 43, comprising a processor and a memory, the memory being used to store a computer program, and the processor calling and operating the computer program stored in the memory. A terminal characterized in that it is used to carry out. 44. A chip, comprising a processor for calling and operating a computer program from a memory and causing a device to which the chip is attached to execute the method according to any one of claims 1 to 43. . Computer-readable storage medium, characterized in that it is used to store a computer program, said computer program causing a computer to carry out the method according to any one of claims 1 to 43. Medium. Computer program product, characterized in that it comprises computer program instructions which cause a computer to carry out the method according to any one of claims 1 to 43. A computer program, characterized in that the computer program causes a computer to execute the method according to any one of claims 1 to 43.

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